What is the next number of the following sequence: 9, 54, 243, 927, 3645, ??

Answer 1

If the series were
9, 54, 243, 972 (instead of given 927), 3645, .....
Then the series can be explained as follows
9*((3^0)*1), 9*((3^1)*2), 9*((3^2)*3), 9*((3^3)*4), 9*((3^4)*5)
So finally answer = 9*((3^5)*6) = 13,122.