A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 483600 can be evenly divided by 1 2 3 4 5 6 8 10 12 13 15 16 20 24 25 26 30 31 39 40 48 50 52 60 62 65 75 78 80 93 100 104 120 124 130 150 155 156 186 195 200 208 240 248 260 300 310 312 325 372 390 400 403 465 496 520 600 620 624 650 744 775 780 806 930 975 1,040 1,200 1,209 1,240 1,300 1,488 1,550 1,560 1,612 1,860 1,950 2,015 2,325 2,418 2,480 2,600 3,100 3,120 3,224 3,720 3,900 4,030 4,650 4,836 5,200 6,045 6,200 6,448 7,440 7,800 8,060 9,300 9,672 10,075 12,090 12,400 15,600 16,120 18,600 19,344 20,150 24,180 30,225 32,240 37,200 40,300 48,360 60,450 80,600 96,720 120,900 161,200 241,800 and 483,600, with no remainder.
Since 483,600 cannot be divided by just 1 and 483,600, it is not a prime number.