Q: Is 491,648 a Prime Number?
A: No, 491,648 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 491648 can be evenly divided by 1 2 4 8 16 23 32 46 64 92 128 167 184 334 368 668 736 1,336 1,472 2,672 2,944 3,841 5,344 7,682 10,688 15,364 21,376 30,728 61,456 122,912 245,824 and 491,648, with no remainder.
Since 491,648 cannot be divided by just 1 and 491,648, it is not a prime number.