A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4654500 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 25 29 30 50 58 60 75 87 100 107 116 125 145 150 174 214 250 290 300 321 348 375 428 435 500 535 580 642 725 750 870 1,070 1,284 1,450 1,500 1,605 1,740 2,140 2,175 2,675 2,900 3,103 3,210 3,625 4,350 5,350 6,206 6,420 7,250 8,025 8,700 9,309 10,700 10,875 12,412 13,375 14,500 15,515 16,050 18,618 21,750 26,750 31,030 32,100 37,236 40,125 43,500 46,545 53,500 62,060 77,575 80,250 93,090 155,150 160,500 186,180 232,725 310,300 387,875 465,450 775,750 930,900 1,163,625 1,551,500 2,327,250 and 4,654,500, with no remainder.
Since 4,654,500 cannot be divided by just 1 and 4,654,500, it is not a prime number.