Q: Is 646,618 a Prime Number?
A: No, 646,618 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 646618 can be evenly divided by 1 2 7 14 46,187 92,374 323,309 and 646,618, with no remainder.
Since 646,618 cannot be divided by just 1 and 646,618, it is not a prime number.