A perfect number is a number, which, when adding all of its proper divisors (all divisors except himself) give the number itself Divisors of 6: 1,2,3 ------>1+2+3=6The next proper number is...
any number multiplied by itself three times is a cube number eg. 3 x 3 x 3 =27 5 x 5 x 5 =125so 27 is a cube number, so is 125you can work out if something is a cube number by cube rooting it there...
A perfect cube is the cube of an integer (whole number). This means that, for n to be a perfect cube, n = x3, x∈ℤ Eg. ±1 [=(±1)3], 8 [=(±2)3], ±27 [= (±3)3], etc.