The cube root of 64 is 4. The cube root of a chosen number can be verified by multiplying a smaller number by itself three times in order to get the chosen number.
The cube root of 64 is 4 because 4 times 4 equals 16, and 16 times 4 equals 64. The cube root of a number is similar to the square root of a number, except the latter is only to the power of two instead of three. Beyond the cube root is the fourth root, fifth root and so on. The key is how many times a number is multiplied by itself.