A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4167600 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 23 24 25 30 40 46 48 50 60 69 75 80 92 100 115 120 138 150 151 184 200 230 240 276 300 302 345 368 400 453 460 552 575 600 604 690 755 906 920 1,104 1,150 1,200 1,208 1,380 1,510 1,725 1,812 1,840 2,265 2,300 2,416 2,760 3,020 3,450 3,473 3,624 3,775 4,530 4,600 5,520 6,040 6,900 6,946 7,248 7,550 9,060 9,200 10,419 11,325 12,080 13,800 13,892 15,100 17,365 18,120 20,838 22,650 27,600 27,784 30,200 34,730 36,240 41,676 45,300 52,095 55,568 60,400 69,460 83,352 86,825 90,600 104,190 138,920 166,704 173,650 181,200 208,380 260,475 277,840 347,300 416,760 520,950 694,600 833,520 1,041,900 1,389,200 2,083,800 and 4,167,600, with no remainder.
Since 4,167,600 cannot be divided by just 1 and 4,167,600, it is not a prime number.