Q: Is 197,640 a Prime Number?
A: No, 197,640 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 197640 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 61 72 81 90 108 120 122 135 162 180 183 216 244 270 305 324 360 366 405 488 540 549 610 648 732 810 915 1,080 1,098 1,220 1,464 1,620 1,647 1,830 2,196 2,440 2,745 3,240 3,294 3,660 4,392 4,941 5,490 6,588 7,320 8,235 9,882 10,980 13,176 16,470 19,764 21,960 24,705 32,940 39,528 49,410 65,880 98,820 and 197,640, with no remainder.
Since 197,640 cannot be divided by just 1 and 197,640, it is not a prime number.