Q: Is 629,840 a Prime Number?
A: No, 629,840 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 629840 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 7,873 15,746 31,492 39,365 62,984 78,730 125,968 157,460 314,920 and 629,840, with no remainder.
Since 629,840 cannot be divided by just 1 and 629,840, it is not a prime number.