76 (number)

In mathematics

• a composite number; a square-prime, of the form where q is a higher prime. It is the ninth of this general form and the seventh of the form.
• a Lucas number.
• a telephone or involution number, the number of different ways of connecting 6 points with pairwise connections.
• a nontotient.
• a 14-gonal number.
• a centered pentagonal number.
• an Erdős–Woods number since it is possible to find sequences of 76 consecutive integers such that each inner member shares a factor with either the first or the last member.
• with an aliquot sum of 64; within an aliquot sequence of three composite numbers to the Prime in the 41-aliquot tree.
• an automorphic number in base 10. It is one of two 2-digit numbers whose square, 5,776, and higher powers, end in the same two digits. The other is.