Q: Is 6,666,920 a Prime Number?
A: No, 6,666,920 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 6666920 can be evenly divided by 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 12,821 25,642 51,284 64,105 102,568 128,210 166,673 256,420 333,346 512,840 666,692 833,365 1,333,384 1,666,730 3,333,460 and 6,666,920, with no remainder.
Since 6,666,920 cannot be divided by just 1 and 6,666,920, it is not a prime number.