A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5973600 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 19 20 24 25 30 32 38 40 48 50 57 60 75 76 80 95 96 100 114 120 131 150 152 160 190 200 228 240 262 285 300 304 380 393 400 456 475 480 524 570 600 608 655 760 786 800 912 950 1,048 1,140 1,200 1,310 1,425 1,520 1,572 1,824 1,900 1,965 2,096 2,280 2,400 2,489 2,620 2,850 3,040 3,144 3,275 3,800 3,930 4,192 4,560 4,978 5,240 5,700 6,288 6,550 7,467 7,600 7,860 9,120 9,825 9,956 10,480 11,400 12,445 12,576 13,100 14,934 15,200 15,720 19,650 19,912 20,960 22,800 24,890 26,200 29,868 31,440 37,335 39,300 39,824 45,600 49,780 52,400 59,736 62,225 62,880 74,670 78,600 79,648 99,560 104,800 119,472 124,450 149,340 157,200 186,675 199,120 238,944 248,900 298,680 314,400 373,350 398,240 497,800 597,360 746,700 995,600 1,194,720 1,493,400 1,991,200 2,986,800 and 5,973,600, with no remainder.
Since 5,973,600 cannot be divided by just 1 and 5,973,600, it is not a prime number.