Q: Is 1,672,640 a Prime Number?
A: No, 1,672,640 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 1672640 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 160 320 5,227 10,454 20,908 26,135 41,816 52,270 83,632 104,540 167,264 209,080 334,528 418,160 836,320 and 1,672,640, with no remainder.
Since 1,672,640 cannot be divided by just 1 and 1,672,640, it is not a prime number.