Q: Is 646,120 a Prime Number?
A: No, 646,120 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 646120 can be evenly divided by 1 2 4 5 8 10 20 29 40 58 116 145 232 290 557 580 1,114 1,160 2,228 2,785 4,456 5,570 11,140 16,153 22,280 32,306 64,612 80,765 129,224 161,530 323,060 and 646,120, with no remainder.
Since 646,120 cannot be divided by just 1 and 646,120, it is not a prime number.