Q: Is 1,646,628 a Prime Number?
A: No, 1,646,628 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 1646628 can be evenly divided by 1 2 3 4 6 12 137,219 274,438 411,657 548,876 823,314 and 1,646,628, with no remainder.
Since 1,646,628 cannot be divided by just 1 and 1,646,628, it is not a prime number.