Q: Is 635,623 a Prime Number?
A: No, 635,623 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 635623 can be evenly divided by 1 37 41 419 1,517 15,503 17,179 and 635,623, with no remainder.
Since 635,623 cannot be divided by just 1 and 635,623, it is not a prime number.