A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6682032 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 42 48 49 56 63 72 84 98 112 126 144 147 168 196 252 294 336 392 441 504 588 784 882 947 1,008 1,176 1,764 1,894 2,352 2,841 3,528 3,788 5,682 6,629 7,056 7,576 8,523 11,364 13,258 15,152 17,046 19,887 22,728 26,516 34,092 39,774 45,456 46,403 53,032 59,661 68,184 79,548 92,806 106,064 119,322 136,368 139,209 159,096 185,612 238,644 278,418 318,192 371,224 417,627 477,288 556,836 742,448 835,254 954,576 1,113,672 1,670,508 2,227,344 3,341,016 and 6,682,032, with no remainder.
Since 6,682,032 cannot be divided by just 1 and 6,682,032, it is not a prime number.