Q: Is 6,667,664 a Prime Number?
A: No, 6,667,664 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 6667664 can be evenly divided by 1 2 4 8 16 331 662 1,259 1,324 2,518 2,648 5,036 5,296 10,072 20,144 416,729 833,458 1,666,916 3,333,832 and 6,667,664, with no remainder.
Since 6,667,664 cannot be divided by just 1 and 6,667,664, it is not a prime number.