*65*
65 is a Stirling number of the second kind, the number of ways of dividing a set of six objects into four non-empty subsets. 65 = 15 + 24 + 33 + 42 + 51. 65 is the length of the hypotenuse of 4 different Pythagorean triangles, the lowest number to have more than 2: 652 = 162 + 632 = 332 + 562 = 392 + 522 = 252 + 602 ~ Everyone knows 65 is “the age of retirement.” Retiring at 65 has been around so long that most of us accept it as a fact and a right without question. But the meaning of 65 has been changing a lot over a long time. In 1935, Social Security became law and 65 became the Full Retirement Age. ~ Singapore Country Code 65 - Worldometer. ~ Divisors of the Positive Integer 65 The integer 65 is an odd number. The integer 65 is a Composite number. 19 is less than 65, so 65 is a deficient number. ~ LXV ~ Number 65 sixty five Properties of the number 65 Factorization 5 * 13 Divisors 1, 5, 13, 65 Count of divisors 4 Sum of divisors 84 Previous integer 64 Next integer 66 I...