Q: Is 1,680,340 a Prime Number?
A: No, 1,680,340 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 1680340 can be evenly divided by 1 2 4 5 10 20 84,017 168,034 336,068 420,085 840,170 and 1,680,340, with no remainder.
Since 1,680,340 cannot be divided by just 1 and 1,680,340, it is not a prime number.