A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 760032 can be evenly divided by 1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 28 29 32 36 39 42 48 52 56 58 63 72 78 84 87 91 96 104 112 116 117 126 144 156 168 174 182 203 208 224 232 234 252 261 273 288 312 336 348 364 377 406 416 464 468 504 522 546 609 624 672 696 728 754 812 819 928 936 1,008 1,044 1,092 1,131 1,218 1,248 1,392 1,456 1,508 1,624 1,638 1,827 1,872 2,016 2,088 2,184 2,262 2,436 2,639 2,784 2,912 3,016 3,248 3,276 3,393 3,654 3,744 4,176 4,368 4,524 4,872 5,278 6,032 6,496 6,552 6,786 7,308 7,917 8,352 8,736 9,048 9,744 10,556 12,064 13,104 13,572 14,616 15,834 18,096 19,488 21,112 23,751 26,208 27,144 29,232 31,668 36,192 42,224 47,502 54,288 58,464 63,336 84,448 95,004 108,576 126,672 190,008 253,344 380,016 and 760,032, with no remainder.
Since 760,032 cannot be divided by just 1 and 760,032, it is not a prime number.