Q: Is 1,680,408 a Prime Number?
A: No, 1,680,408 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 1680408 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 36 72 23,339 46,678 70,017 93,356 140,034 186,712 210,051 280,068 420,102 560,136 840,204 and 1,680,408, with no remainder.
Since 1,680,408 cannot be divided by just 1 and 1,680,408, it is not a prime number.