A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 9074736 can be evenly divided by 1 2 3 4 6 8 9 11 12 16 17 18 22 24 33 34 36 44 48 51 66 68 72 88 99 102 132 136 144 153 176 187 198 204 264 272 306 337 374 396 408 528 561 612 674 748 792 816 1,011 1,122 1,224 1,348 1,496 1,584 1,683 2,022 2,244 2,448 2,696 2,992 3,033 3,366 3,707 4,044 4,488 5,392 5,729 6,066 6,732 7,414 8,088 8,976 11,121 11,458 12,132 13,464 14,828 16,176 17,187 22,242 22,916 24,264 26,928 29,656 33,363 34,374 44,484 45,832 48,528 51,561 59,312 63,019 66,726 68,748 88,968 91,664 103,122 126,038 133,452 137,496 177,936 189,057 206,244 252,076 266,904 274,992 378,114 412,488 504,152 533,808 567,171 756,228 824,976 1,008,304 1,134,342 1,512,456 2,268,684 3,024,912 4,537,368 and 9,074,736, with no remainder.
Since 9,074,736 cannot be divided by just 1 and 9,074,736, it is not a prime number.