A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 694200 can be evenly divided by 1 2 3 4 5 6 8 10 12 13 15 20 24 25 26 30 39 40 50 52 60 65 75 78 89 100 104 120 130 150 156 178 195 200 260 267 300 312 325 356 390 445 520 534 600 650 712 780 890 975 1,068 1,157 1,300 1,335 1,560 1,780 1,950 2,136 2,225 2,314 2,600 2,670 3,471 3,560 3,900 4,450 4,628 5,340 5,785 6,675 6,942 7,800 8,900 9,256 10,680 11,570 13,350 13,884 17,355 17,800 23,140 26,700 27,768 28,925 34,710 46,280 53,400 57,850 69,420 86,775 115,700 138,840 173,550 231,400 347,100 and 694,200, with no remainder.
Since 694,200 cannot be divided by just 1 and 694,200, it is not a prime number.