Q: Is 2,642,564 a Prime Number?
A: No, 2,642,564 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 2642564 can be evenly divided by 1 2 4 31 62 101 124 202 211 404 422 844 3,131 6,262 6,541 12,524 13,082 21,311 26,164 42,622 85,244 660,641 1,321,282 and 2,642,564, with no remainder.
Since 2,642,564 cannot be divided by just 1 and 2,642,564, it is not a prime number.