A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6667200 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 32 36 40 45 48 50 60 64 72 75 80 90 96 100 120 144 150 160 180 192 200 225 240 288 300 320 360 400 450 463 480 576 600 720 800 900 926 960 1,200 1,389 1,440 1,600 1,800 1,852 2,315 2,400 2,778 2,880 3,600 3,704 4,167 4,630 4,800 5,556 6,945 7,200 7,408 8,334 9,260 11,112 11,575 13,890 14,400 14,816 16,668 18,520 20,835 22,224 23,150 27,780 29,632 33,336 34,725 37,040 41,670 44,448 46,300 55,560 66,672 69,450 74,080 83,340 88,896 92,600 104,175 111,120 133,344 138,900 148,160 166,680 185,200 208,350 222,240 266,688 277,800 333,360 370,400 416,700 444,480 555,600 666,720 740,800 833,400 1,111,200 1,333,440 1,666,800 2,222,400 3,333,600 and 6,667,200, with no remainder.
Since 6,667,200 cannot be divided by just 1 and 6,667,200, it is not a prime number.