A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6727104 can be evenly divided by 1 2 3 4 6 8 9 12 16 17 18 24 27 32 34 36 48 51 54 64 68 72 96 102 108 136 144 153 192 204 216 229 272 288 306 408 432 458 459 544 576 612 687 816 864 916 918 1,088 1,224 1,374 1,632 1,728 1,832 1,836 2,061 2,448 2,748 3,264 3,664 3,672 3,893 4,122 4,896 5,496 6,183 7,328 7,344 7,786 8,244 9,792 10,992 11,679 12,366 14,656 14,688 15,572 16,488 21,984 23,358 24,732 29,376 31,144 32,976 35,037 43,968 46,716 49,464 62,288 65,952 70,074 93,432 98,928 105,111 124,576 131,904 140,148 186,864 197,856 210,222 249,152 280,296 373,728 395,712 420,444 560,592 747,456 840,888 1,121,184 1,681,776 2,242,368 3,363,552 and 6,727,104, with no remainder.
Since 6,727,104 cannot be divided by just 1 and 6,727,104, it is not a prime number.