Q: Is 677,408 a Prime Number?
A: No, 677,408 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 677408 can be evenly divided by 1 2 4 8 16 32 21,169 42,338 84,676 169,352 338,704 and 677,408, with no remainder.
Since 677,408 cannot be divided by just 1 and 677,408, it is not a prime number.