A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7533630 can be evenly divided by 1 2 3 5 6 9 10 13 15 18 26 30 39 45 47 65 78 90 94 117 130 137 141 195 234 235 274 282 390 411 423 470 585 611 685 705 822 846 1,170 1,222 1,233 1,370 1,410 1,781 1,833 2,055 2,115 2,466 3,055 3,562 3,666 4,110 4,230 5,343 5,499 6,110 6,165 6,439 8,905 9,165 10,686 10,998 12,330 12,878 16,029 17,810 18,330 19,317 26,715 27,495 32,058 32,195 38,634 53,430 54,990 57,951 64,390 80,145 83,707 96,585 115,902 160,290 167,414 193,170 251,121 289,755 418,535 502,242 579,510 753,363 837,070 1,255,605 1,506,726 2,511,210 3,766,815 and 7,533,630, with no remainder.
Since 7,533,630 cannot be divided by just 1 and 7,533,630, it is not a prime number.