It is 1 multiplied by the number three times and is called a perfect cube.
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It is a perfect cube.
How about 27 whose cube root is 3 which is a rational whole number.
a perfect cube
not a whole number. 6 is 216, and 7 is 343 the cube root of 333 is 6.93
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.