Natural number From Wikipedia, the free encyclopedia
60 (sixty) (Listenⓘ) is the natural number following 59 and preceding 61. Being three times 20, it is called threescore in older literature (kopa in Slavic, Schock in Germanic).
60 is a Twin-prime sum of the fifth pair of twin-primes, 29 + 31.
It is the smallest number divisible by the numbers from 1 to 6: there is no smaller number divisible by the numbers from 1 to 5 since any number divisible by 2 and 3 must also be divisible by 6.
It is the smallest number with exactly 12 divisors. Having 12 as one of those divisors, 60 is also a refactorable number.
It is one of seven integers that have more divisors than any number less than twice itself (sequence A072938 in the OEIS), one of six that are also lowest common multiple of a consecutive set of integers from 1, and one of six that are divisors of every highly composite number higher than itself. (sequence A106037 in the OEIS)
It is the smallest number that is the sum of two odd primes in six ways.[3]
In normal space, the three interior angles of an equilateral triangle each measure 60 degrees, adding up to 180 degrees.
Because it is divisible by the sum of its digits in decimal, it is a Harshad number.
A number system with base 60 is called sexagesimal (the original meaning of sexagesimal is sixtieth).
It is the smallest positive integer that is written with only the smallest and the largest digit of base 2 (binary), base 3 (ternary), and base 4 (quaternary).
The electrical utility frequency in western Japan, South Korea, Taiwan, the Philippines, the United States, and several other countries in the Americas is 60 Hz.
The Babylonian cuneiform numerals had a base of 60, inherited from the Sumerian and Akkadian civilizations, and possibly motivated by the large number of divisors that 60 has.[citation needed] The sexagesimal measurement of time and of geometric angles is a legacy of the Babylonian system.
60 occurs several times in the Bible; for example, as the age of Isaac when Jacob and Esau were born,[7] and the number of warriors escorting King Solomon.[8]
In the laws of kashrut of Judaism, 60 is the proportion (60:1) of kosher to non-kosher ingredients that can render an admixture kosher post-facto.[9]
In the Quran, 60 is mentioned once: "..he should feed sixty indigent ones..",[10] but it is mentioned many times in the Hadith, most notably Muhammad being reported to say, "..Allah, the Exalted and Glorious, created Adam in His own image with His length of sixty cubits.."[11]
In Hinduism, the 60th birthday of a man is called Sashti poorthi. A ceremony called Sashti (60) Abda (years) Poorthi (completed) in Sanskrit is conducted to felicitate this birthday. It represents a milestone in his life. There are 60 years mentioned in the historic Indian calendars.
There are 60 seconds in a minute, and 60 minutes in an hour.
The number of feet in the standard measurement tool to evaluate an automotive launch on a dragstrip, as the time taken to travel the first 60 feet (18m) of the track.
The number of miles per hour an automobile accelerates to from rest (0-60) as one of the standard measurements of performance
In NCAA Division II, each member school may provide athletically-related financial aid in men's sports amounting to no more than the equivalent of 60 full scholarships. Basketball and football are excluded from this limit by rule.
The total number of minutes in an ice hockey game, divided into three periods.
The total number of minutes in a gridiron football game, divided into four quarters.
The point differential in the 2024 Orange Bowl played between Georgia and FSU.
Dennis Guedj, Numbers: The Universal Language, transl. Lory Frankel. New York: Harry N. Abrams, Inc. Publishers (1997): 71. "60: the ace of divisibility. The more divisible a number is ... the more useful it proves in certain situations. ... Is it because 60 is highly divisible that the hour has been divided into 60 minutes, and the minute into 60 seconds? Look at the list of its twelve divisors ... Compare this with the larger number 100, which has only nine divisors."