Q: Is 6,780,816 a Prime Number?
A: No, 6,780,816 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 6780816 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 31 36 42 48 49 56 62 63 72 84 93 98 112 124 126 144 147 168 186 196 217 248 252 279 294 336 372 392 434 441 496 504 558 588 651 744 784 868 882 961 1,008 1,116 1,176 1,302 1,488 1,519 1,736 1,764 1,922 1,953 2,232 2,352 2,604 2,883 3,038 3,472 3,528 3,844 3,906 4,464 4,557 5,208 5,766 6,076 6,727 7,056 7,688 7,812 8,649 9,114 10,416 11,532 12,152 13,454 13,671 15,376 15,624 17,298 18,228 20,181 23,064 24,304 26,908 27,342 31,248 34,596 36,456 40,362 46,128 47,089 53,816 54,684 60,543 69,192 72,912 80,724 94,178 107,632 109,368 121,086 138,384 141,267 161,448 188,356 218,736 242,172 282,534 322,896 376,712 423,801 484,344 565,068 753,424 847,602 968,688 1,130,136 1,695,204 2,260,272 3,390,408 and 6,780,816, with no remainder.
Since 6,780,816 cannot be divided by just 1 and 6,780,816, it is not a prime number.