Q: Is 678,508 a Prime Number?
A: No, 678,508 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 678508 can be evenly divided by 1 2 4 169,627 339,254 and 678,508, with no remainder.
Since 678,508 cannot be divided by just 1 and 678,508, it is not a prime number.