Q: Is 1,604,655 a Prime Number?
A: No, 1,604,655 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 1604655 can be evenly divided by 1 3 5 9 13 15 39 45 65 117 169 195 211 507 585 633 845 1,055 1,521 1,899 2,535 2,743 3,165 7,605 8,229 9,495 13,715 24,687 35,659 41,145 106,977 123,435 178,295 320,931 534,885 and 1,604,655, with no remainder.
Since 1,604,655 cannot be divided by just 1 and 1,604,655, it is not a prime number.