Q: Is 722,656 a Prime Number?
A: No, 722,656 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 722656 can be evenly divided by 1 2 4 8 11 16 22 32 44 88 176 352 2,053 4,106 8,212 16,424 22,583 32,848 45,166 65,696 90,332 180,664 361,328 and 722,656, with no remainder.
Since 722,656 cannot be divided by just 1 and 722,656, it is not a prime number.