A cube number is a number that is the result of multiplying an integer by itself twice. In simpler terms, if you take a whole number and raise it to the third power, you get a cube number. For example, 2 cubed (2 × 2 × 2) equals 8, making 8 a cube number. Other examples include 1 (1 × 1 × 1), 27 (3 × 3 × 3), and 64 (4 × 4 × 4). Cube numbers can be visualized as the volume of a cube in three-dimensional space. Each side of the cube has a length equal to the integer being cubed. This concept is important in various fields, including mathematics, geometry, and science, as it helps in understanding spatial relationships and properties of three-dimensional objects.