Q: Is 646,629 a Prime Number?
A: No, 646,629 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 646629 can be evenly divided by 1 3 17 31 51 93 409 527 1,227 1,581 6,953 12,679 20,859 38,037 215,543 and 646,629, with no remainder.
Since 646,629 cannot be divided by just 1 and 646,629, it is not a prime number.