Q: Is 685,920 a Prime Number?
A: No, 685,920 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 685920 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 1,429 2,858 4,287 5,716 7,145 8,574 11,432 14,290 17,148 21,435 22,864 28,580 34,296 42,870 45,728 57,160 68,592 85,740 114,320 137,184 171,480 228,640 342,960 and 685,920, with no remainder.
Since 685,920 cannot be divided by just 1 and 685,920, it is not a prime number.