Q: Is 1,646,520 a Prime Number?
A: No, 1,646,520 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 1646520 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 13,721 27,442 41,163 54,884 68,605 82,326 109,768 137,210 164,652 205,815 274,420 329,304 411,630 548,840 823,260 and 1,646,520, with no remainder.
Since 1,646,520 cannot be divided by just 1 and 1,646,520, it is not a prime number.