80660766 has 16 divisors (see below), whose sum is σ = 163532304. Its totient is φ = 26518464.

The previous prime is 80660759. The next prime is 80660771. The reversal of 80660766 is 66706608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91641 + ... + 92516.

It is an arithmetic number, because the mean of its divisors is an integer number (10220769).

Almost surely, 2^80660766 is an apocalyptic number.

80660766 is an abundant number, since it is smaller than the sum of its proper divisors (82871538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80660766 is a wasteful number, since it uses less digits than its factorization.

80660766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184235.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 80660766 is about 8981.1338927777. The cubic root of 80660766 is about 432.0700010879.

The spelling of 80660766 in words is "eighty million, six hundred sixty thousand, seven hundred sixty-six".