Q: Is 2,640,664 a Prime Number?
A: No, 2,640,664 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 2640664 can be evenly divided by 1 2 4 8 13 26 52 104 25,391 50,782 101,564 203,128 330,083 660,166 1,320,332 and 2,640,664, with no remainder.
Since 2,640,664 cannot be divided by just 1 and 2,640,664, it is not a prime number.