Q: Is 635,642 a Prime Number?
A: No, 635,642 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 635642 can be evenly divided by 1 2 7 14 45,403 90,806 317,821 and 635,642, with no remainder.
Since 635,642 cannot be divided by just 1 and 635,642, it is not a prime number.