Q: Is 1,640,508 a Prime Number?
A: No, 1,640,508 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 1640508 can be evenly divided by 1 2 3 4 6 12 136,709 273,418 410,127 546,836 820,254 and 1,640,508, with no remainder.
Since 1,640,508 cannot be divided by just 1 and 1,640,508, it is not a prime number.