80666764 has 12 divisors (see below), whose sum is σ = 141521688. Its totient is φ = 40232000.

The previous prime is 80666759. The next prime is 80666779. The reversal of 80666764 is 46766608.

It is a self number, because there is not a number n which added to its sum of digits gives 80666764.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23542 + ... + 26749.

It is an arithmetic number, because the mean of its divisors is an integer number (11793474).

Almost surely, 2^80666764 is an apocalyptic number.

It is an amenable number.

80666764 is a deficient number, since it is larger than the sum of its proper divisors (60854924).

80666764 is a wasteful number, since it uses less digits than its factorization.

80666764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50696 (or 50694 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 80666764 is about 8981.4678087716. The cubic root of 80666764 is about 432.0807105143.

The spelling of 80666764 in words is "eighty million, six hundred sixty-six thousand, seven hundred sixty-four".