Q: Is 642,704 a Prime Number?
A: No, 642,704 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 642704 can be evenly divided by 1 2 4 8 16 40,169 80,338 160,676 321,352 and 642,704, with no remainder.
Since 642,704 cannot be divided by just 1 and 642,704, it is not a prime number.