Q: Is 6,428,620 a Prime Number?
A: No, 6,428,620 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 6428620 can be evenly divided by 1 2 4 5 10 11 20 22 44 55 110 220 29,221 58,442 116,884 146,105 292,210 321,431 584,420 642,862 1,285,724 1,607,155 3,214,310 and 6,428,620, with no remainder.
Since 6,428,620 cannot be divided by just 1 and 6,428,620, it is not a prime number.