The number 8 can be written in English as "eight". It is a single-digit number that comes after 7 and before 9 in the numerical sequence. In many cultures, the number 8 is considered lucky or auspicious, and is associated with prosperity and success. In mathematics, 8 is an even number and is the cube of 2. It is also used to represent the eighth note in a musical scale and the eighth day of the week in some cultures.