A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8812608 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 79 83 84 96 112 158 166 168 192 224 237 249 316 332 336 448 474 498 553 581 632 664 672 948 996 1,106 1,162 1,264 1,328 1,344 1,659 1,743 1,896 1,992 2,212 2,324 2,528 2,656 3,318 3,486 3,792 3,984 4,424 4,648 5,056 5,312 6,557 6,636 6,972 7,584 7,968 8,848 9,296 13,114 13,272 13,944 15,168 15,936 17,696 18,592 19,671 26,228 26,544 27,888 35,392 37,184 39,342 45,899 52,456 53,088 55,776 78,684 91,798 104,912 106,176 111,552 137,697 157,368 183,596 209,824 275,394 314,736 367,192 419,648 550,788 629,472 734,384 1,101,576 1,258,944 1,468,768 2,203,152 2,937,536 4,406,304 and 8,812,608, with no remainder.
Since 8,812,608 cannot be divided by just 1 and 8,812,608, it is not a prime number.