A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4762065 can be evenly divided by 1 3 5 7 11 15 19 21 31 33 35 49 55 57 77 93 95 105 133 147 155 165 209 217 231 245 285 341 385 399 465 539 589 627 651 665 735 931 1,023 1,045 1,085 1,155 1,463 1,519 1,617 1,705 1,767 1,995 2,387 2,695 2,793 2,945 3,135 3,255 4,123 4,389 4,557 4,655 5,115 6,479 7,161 7,315 7,595 8,085 8,835 10,241 11,935 12,369 13,965 16,709 19,437 20,615 21,945 22,785 28,861 30,723 32,395 35,805 45,353 50,127 51,205 61,845 83,545 86,583 97,185 136,059 144,305 153,615 226,765 250,635 317,471 432,915 680,295 952,413 1,587,355 and 4,762,065, with no remainder.
Since 4,762,065 cannot be divided by just 1 and 4,762,065, it is not a prime number.