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.
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If by cube you mean perfect cube (a cube of an integer), then no, and the nearest perfect cube is 81.
It is a perfect cube.
It is not a perfect cube.
a perfect cube
729, cube of 9 and square of 27