-27 is an odd number.
-27 is a Harshad number, which means it is divisible by the sum of its digits (2 + 7 = 9, and -27 is divisible by 9).
In binary, -27 is represented as 1111111111111111111111111111111111111111111111111111111111100101.
In hex, -27 is represented as ffffffffffffffe5.