A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8656362 can be evenly divided by 1 2 3 6 9 11 13 18 19 22 26 27 33 38 39 54 57 59 66 78 99 114 117 118 143 171 177 198 209 234 247 286 297 342 351 354 418 429 494 513 531 594 627 649 702 741 767 858 1,026 1,062 1,121 1,254 1,287 1,298 1,482 1,534 1,593 1,881 1,947 2,223 2,242 2,301 2,574 2,717 3,186 3,363 3,762 3,861 3,894 4,446 4,602 5,434 5,643 5,841 6,669 6,726 6,903 7,722 8,151 8,437 10,089 11,286 11,682 12,331 13,338 13,806 14,573 16,302 16,874 17,523 20,178 20,709 24,453 24,662 25,311 29,146 30,267 35,046 36,993 41,418 43,719 48,906 50,622 60,534 73,359 73,986 75,933 87,438 110,979 131,157 146,718 151,866 160,303 221,958 227,799 262,314 320,606 332,937 393,471 455,598 480,909 665,874 786,942 961,818 1,442,727 2,885,454 4,328,181 and 8,656,362, with no remainder.
Since 8,656,362 cannot be divided by just 1 and 8,656,362, it is not a prime number.