2080
There is no pair of perfect squares that add up to 64.
101
82
62 64 66 68 70 72
64
64 itself is a square. There are no other two squares that add up to 64.
101
There is no pair of perfect squares that add up to 64.
36 and 64
There are 3 prime numbers between 64 and 77: 67 71 73.
16 and 64
82
36 and 64
64
62 64 66 68 70 72
The sum of all odd numbers from 1 to 64 inclusive is 4,096
All the whole numbers that you can divide from 64 and get a whole number are 1, 2, 4, 8, 16, 32, and 64.