387 is divisible by: 1 3 9 43 129 and 387.
215 387 129 645 258 86 1032 3096 1720 860 172 344
129
Oh, dude, 9675 is divisible by 1, 3, 5, 15, 25, 75, 129, 387, 645, and 1935. So, like, it's got quite a few options for division parties. Just pick your favorite divisor and have at it!
64.5
387 is divisible by: 1 3 9 43 129 and 387.
No - 387/6 =64.5
No.
No it's not. To be divisible by five it has to end in either five or zero.
215 387 129 645 258 86 1032 3096 1720 860 172 344
129
62 of them.
1, 3, 7, 9, 21, 27, 43, 63, 129, 189, 301, 387, 903, 1161, 2709, 8127.
387 = 3 x 3 x 43
64.5
All composite.
As a product of its prime factors: 3*3*43 = 387