Q: Is 1,604,574 a Prime Number?
A: No, 1,604,574 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 1604574 can be evenly divided by 1 2 3 6 9 18 97 194 291 582 873 919 1,746 1,838 2,757 5,514 8,271 16,542 89,143 178,286 267,429 534,858 802,287 and 1,604,574, with no remainder.
Since 1,604,574 cannot be divided by just 1 and 1,604,574, it is not a prime number.