A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5064600 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 23 24 25 30 40 46 50 60 69 75 92 100 115 120 138 150 184 200 230 276 300 345 367 460 552 575 600 690 734 920 1,101 1,150 1,380 1,468 1,725 1,835 2,202 2,300 2,760 2,936 3,450 3,670 4,404 4,600 5,505 6,900 7,340 8,441 8,808 9,175 11,010 13,800 14,680 16,882 18,350 22,020 25,323 27,525 33,764 36,700 42,205 44,040 50,646 55,050 67,528 73,400 84,410 101,292 110,100 126,615 168,820 202,584 211,025 220,200 253,230 337,640 422,050 506,460 633,075 844,100 1,012,920 1,266,150 1,688,200 2,532,300 and 5,064,600, with no remainder.
Since 5,064,600 cannot be divided by just 1 and 5,064,600, it is not a prime number.