Q: Is 672,688 a Prime Number?
A: No, 672,688 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 672688 can be evenly divided by 1 2 4 8 16 42,043 84,086 168,172 336,344 and 672,688, with no remainder.
Since 672,688 cannot be divided by just 1 and 672,688, it is not a prime number.