The result of using a whole number in a multiplication **three times**, just like the sides of a cube.

Example: 3 × 3 × 3 = 27, so 27 is a cube number.

Here are the first few cube numbers:

1 (=1×1×1)

8 (=2×2×2)

27 (=3×3×3)

64 (=4×4×4)

125 (=5×5×5)

... etc

See: Square Number