80684166 has 16 divisors (see below), whose sum is σ = 161456688. Its totient is φ = 26880000.

The previous prime is 80684137. The next prime is 80684171. The reversal of 80684166 is 66148608.

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, 18166 + ... + 22166.

It is an arithmetic number, because the mean of its divisors is an integer number (10091043).

Almost surely, 2^80684166 is an apocalyptic number.

80684166 is an abundant number, since it is smaller than the sum of its proper divisors (80772522).

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

80684166 is a wasteful number, since it uses less digits than its factorization.

80684166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 80684166 is about 8982.4365291384. The cubic root of 80684166 is about 432.1117787740. Note that the first 3 decimals are identical.

The spelling of 80684166 in words is "eighty million, six hundred eighty-four thousand, one hundred sixty-six".