Q: Is 646,377 a Prime Number?
A: No, 646,377 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 646377 can be evenly divided by 1 3 215,459 and 646,377, with no remainder.
Since 646,377 cannot be divided by just 1 and 646,377, it is not a prime number.