A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7602504 can be evenly divided by 1 2 3 4 6 7 8 12 13 14 21 24 26 28 39 42 52 56 59 78 84 91 104 118 156 168 177 182 236 273 312 354 364 413 472 546 708 728 767 826 1,092 1,239 1,416 1,534 1,652 2,184 2,301 2,478 3,068 3,304 3,481 4,602 4,956 5,369 6,136 6,962 9,204 9,912 10,443 10,738 13,924 16,107 18,408 20,886 21,476 24,367 27,848 32,214 41,772 42,952 45,253 48,734 64,428 73,101 83,544 90,506 97,468 128,856 135,759 146,202 181,012 194,936 271,518 292,404 316,771 362,024 543,036 584,808 633,542 950,313 1,086,072 1,267,084 1,900,626 2,534,168 3,801,252 and 7,602,504, with no remainder.
Since 7,602,504 cannot be divided by just 1 and 7,602,504, it is not a prime number.