The number 712,530 can be evenly divided by 1 2 3 5 6 7 9 10 13 14 15 18 21 26 27 29 30 35 39 42 45 54 58 63 65 70 78 87 90 91 105 117 126 130 135 145 174 182 189 195 203 210 234 261 270 273 290 315 351 377 378 390 406 435 455 522 546 585 609 630 702 754 783 819 870 910 945 1,015 1,131 1,170 1,218 1,305 1,365 1,566 1,638 1,755 1,827 1,885 1,890 2,030 2,262 2,457 2,610 2,639 2,730 3,045 3,393 3,510 3,654 3,770 3,915 4,095 4,914 5,278 5,481 5,655 6,090 6,786 7,830 7,917 8,190 9,135 10,179 10,962 11,310 12,285 13,195 15,834 16,965 18,270 20,358 23,751 24,570 26,390 27,405 33,930 39,585 47,502 50,895 54,810 71,253 79,170 101,790 118,755 142,506 237,510 356,265 and 712,530, with no remainder.
Since 712,530 cannot be divided by just 1 and 712,530, it is a composite number.