Q: Is 634,521 a Prime Number?
A: No, 634,521 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 634521 can be evenly divided by 1 3 211,507 and 634,521, with no remainder.
Since 634,521 cannot be divided by just 1 and 634,521, it is not a prime number.