64 (number) it is possible to find sequences of 64 consecutive integers such that each inner member shares a factor with either the first or the last member, 64 is an Erdős–Woods number. In base 10, no integer added up to its own digits yields 64, hence it is a self number. 64 is a superperfect number—a number such that σ(σ("n")) = 2"n". 64 is the index of Graham's number in the rapidly growing sequence 3↑↑↑↑3, 3 ↑ 3,… Sixty-four is: 64 (number) 64 (sixty-four) is the natural number following 63 and preceding 65. Sixty-four is the square of 8, the cube
The Lady Is a Square as an advance from Greenslades. After learning of Burn’s fame, Joanna goes to his concert. When her mother discovers this, she grows furious and confronts both of them firing Burns and forbidding her daughter from seeing him again. In his anger, he calls her a "square". Their rift is not helped by his next song, "The Lady is a Square" which appears to be directly mocking her. However she relents when she discovers that he has secretly been paying her bills and that he is trying to abandon a concert of his, which is scheduled at the same time as