Q: Is 6,643,427 a Prime Number?
A: No, 6,643,427 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 6643427 can be evenly divided by 1 7 167 1,169 5,683 39,781 949,061 and 6,643,427, with no remainder.
Since 6,643,427 cannot be divided by just 1 and 6,643,427, it is not a prime number.