Q: Is 1,689,720 a Prime Number?
A: No, 1,689,720 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 1689720 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 14,081 28,162 42,243 56,324 70,405 84,486 112,648 140,810 168,972 211,215 281,620 337,944 422,430 563,240 844,860 and 1,689,720, with no remainder.
Since 1,689,720 cannot be divided by just 1 and 1,689,720, it is not a prime number.