Q: Is 840,680 a Prime Number?
A: No, 840,680 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 840680 can be evenly divided by 1 2 4 5 8 10 20 40 21,017 42,034 84,068 105,085 168,136 210,170 420,340 and 840,680, with no remainder.
Since 840,680 cannot be divided by just 1 and 840,680, it is not a prime number.