Q: Is 646,530 a Prime Number?
A: No, 646,530 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 646530 can be evenly divided by 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 937 1,874 2,811 4,685 5,622 9,370 14,055 21,551 28,110 43,102 64,653 107,755 129,306 215,510 323,265 and 646,530, with no remainder.
Since 646,530 cannot be divided by just 1 and 646,530, it is not a prime number.