Q: Is 626,840 a Prime Number?
A: No, 626,840 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 626840 can be evenly divided by 1 2 4 5 8 10 20 40 15,671 31,342 62,684 78,355 125,368 156,710 313,420 and 626,840, with no remainder.
Since 626,840 cannot be divided by just 1 and 626,840, it is not a prime number.