Q: Is 677,420 a Prime Number?
A: No, 677,420 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 677420 can be evenly divided by 1 2 4 5 10 20 33,871 67,742 135,484 169,355 338,710 and 677,420, with no remainder.
Since 677,420 cannot be divided by just 1 and 677,420, it is not a prime number.