Q: Is 626,720 a Prime Number?
A: No, 626,720 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 626720 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 3,917 7,834 15,668 19,585 31,336 39,170 62,672 78,340 125,344 156,680 313,360 and 626,720, with no remainder.
Since 626,720 cannot be divided by just 1 and 626,720, it is not a prime number.