A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 580800 can be evenly divided by 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 25 30 32 33 40 44 48 50 55 60 64 66 75 80 88 96 100 110 120 121 132 150 160 165 176 192 200 220 240 242 264 275 300 320 330 352 363 400 440 480 484 528 550 600 605 660 704 726 800 825 880 960 968 1,056 1,100 1,200 1,210 1,320 1,452 1,600 1,650 1,760 1,815 1,936 2,112 2,200 2,400 2,420 2,640 2,904 3,025 3,300 3,520 3,630 3,872 4,400 4,800 4,840 5,280 5,808 6,050 6,600 7,260 7,744 8,800 9,075 9,680 10,560 11,616 12,100 13,200 14,520 17,600 18,150 19,360 23,232 24,200 26,400 29,040 36,300 38,720 48,400 52,800 58,080 72,600 96,800 116,160 145,200 193,600 290,400 and 580,800, with no remainder.
Since 580,800 cannot be divided by just 1 and 580,800, it is not a prime number.