Q: Is 6,721,672 a Prime Number?
A: No, 6,721,672 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 6721672 can be evenly divided by 1 2 4 8 53 83 106 166 191 212 332 382 424 664 764 1,528 4,399 8,798 10,123 15,853 17,596 20,246 31,706 35,192 40,492 63,412 80,984 126,824 840,209 1,680,418 3,360,836 and 6,721,672, with no remainder.
Since 6,721,672 cannot be divided by just 1 and 6,721,672, it is not a prime number.