A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4665696 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 53 56 84 96 106 112 131 159 168 212 224 262 318 336 371 393 424 524 636 672 742 786 848 917 1,048 1,113 1,272 1,484 1,572 1,696 1,834 2,096 2,226 2,544 2,751 2,968 3,144 3,668 4,192 4,452 5,088 5,502 5,936 6,288 6,943 7,336 8,904 11,004 11,872 12,576 13,886 14,672 17,808 20,829 22,008 27,772 29,344 35,616 41,658 44,016 48,601 55,544 83,316 88,032 97,202 111,088 145,803 166,632 194,404 222,176 291,606 333,264 388,808 583,212 666,528 777,616 1,166,424 1,555,232 2,332,848 and 4,665,696, with no remainder.
Since 4,665,696 cannot be divided by just 1 and 4,665,696, it is not a prime number.