The number 614,250 can be evenly divided by 1 2 3 5 6 7 9 10 13 14 15 18 21 25 26 27 30 35 39 42 45 50 54 63 65 70 75 78 90 91 105 117 125 126 130 135 150 175 182 189 195 210 225 234 250 270 273 315 325 350 351 375 378 390 450 455 525 546 585 630 650 675 702 750 819 875 910 945 975 1,050 1,125 1,170 1,350 1,365 1,575 1,625 1,638 1,750 1,755 1,890 1,950 2,250 2,275 2,457 2,625 2,730 2,925 3,150 3,250 3,375 3,510 4,095 4,550 4,725 4,875 4,914 5,250 5,850 6,750 6,825 7,875 8,190 8,775 9,450 9,750 11,375 12,285 13,650 14,625 15,750 17,550 20,475 22,750 23,625 24,570 29,250 34,125 40,950 43,875 47,250 61,425 68,250 87,750 102,375 122,850 204,750 307,125 and 614,250, with no remainder.
Since 614,250 cannot be divided by just 1 and 614,250, it is a composite number.