Q: Is 8,420,664 a Prime Number?
A: No, 8,420,664 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 8420664 can be evenly divided by 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 50,123 100,246 150,369 200,492 300,738 350,861 400,984 601,476 701,722 1,052,583 1,202,952 1,403,444 2,105,166 2,806,888 4,210,332 and 8,420,664, with no remainder.
Since 8,420,664 cannot be divided by just 1 and 8,420,664, it is not a prime number.