Q: Is 684,628 a Prime Number?
A: No, 684,628 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 684628 can be evenly divided by 1 2 4 7 14 28 49 98 196 343 499 686 998 1,372 1,996 3,493 6,986 13,972 24,451 48,902 97,804 171,157 342,314 and 684,628, with no remainder.
Since 684,628 cannot be divided by just 1 and 684,628, it is not a prime number.