Q: Is 1,608,840 a Prime Number?
A: No, 1,608,840 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 1608840 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 41 45 60 72 82 90 109 120 123 164 180 205 218 246 327 328 360 369 410 436 492 545 615 654 738 820 872 981 984 1,090 1,230 1,308 1,476 1,635 1,640 1,845 1,962 2,180 2,460 2,616 2,952 3,270 3,690 3,924 4,360 4,469 4,905 4,920 6,540 7,380 7,848 8,938 9,810 13,080 13,407 14,760 17,876 19,620 22,345 26,814 35,752 39,240 40,221 44,690 53,628 67,035 80,442 89,380 107,256 134,070 160,884 178,760 201,105 268,140 321,768 402,210 536,280 804,420 and 1,608,840, with no remainder.
Since 1,608,840 cannot be divided by just 1 and 1,608,840, it is not a prime number.