Q: Is 624,400 a Prime Number?
A: No, 624,400 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 624400 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 25 28 35 40 50 56 70 80 100 112 140 175 200 223 280 350 400 446 560 700 892 1,115 1,400 1,561 1,784 2,230 2,800 3,122 3,568 4,460 5,575 6,244 7,805 8,920 11,150 12,488 15,610 17,840 22,300 24,976 31,220 39,025 44,600 62,440 78,050 89,200 124,880 156,100 312,200 and 624,400, with no remainder.
Since 624,400 cannot be divided by just 1 and 624,400, it is not a prime number.