Q: Is 816,680 a Prime Number?
A: No, 816,680 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 816680 can be evenly divided by 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 1,201 2,402 4,804 6,005 9,608 12,010 20,417 24,020 40,834 48,040 81,668 102,085 163,336 204,170 408,340 and 816,680, with no remainder.
Since 816,680 cannot be divided by just 1 and 816,680, it is not a prime number.