80686806 has 32 divisors (see below), whose sum is σ = 177258240. Its totient is φ = 24371424.

The previous prime is 80686789. The next prime is 80686841. The reversal of 80686806 is 60868608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12765 + ... + 18008.

It is an arithmetic number, because the mean of its divisors is an integer number (5539320).

Almost surely, 2^80686806 is an apocalyptic number.

80686806 is an abundant number, since it is smaller than the sum of its proper divisors (96571434).

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

80686806 is a wasteful number, since it uses less digits than its factorization.

80686806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30820.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 80686806 is about 8982.5834813822. The cubic root of 80686806 is about 432.1164916469.

The spelling of 80686806 in words is "eighty million, six hundred eighty-six thousand, eight hundred six".