80905165 has 16 divisors (see below), whose sum is σ = 106189056. Its totient is φ = 58686400.

The previous prime is 80905151. The next prime is 80905217. The reversal of 80905165 is 56150908.

It is not a de Polignac number, because 80905165 - 2⁷ = 80905037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80905165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21999 + ... + 25411.

It is an arithmetic number, because the mean of its divisors is an integer number (6636816).

Almost surely, 2^80905165 is an apocalyptic number.

It is an amenable number.

80905165 is a deficient number, since it is larger than the sum of its proper divisors (25283891).

80905165 is a wasteful number, since it uses less digits than its factorization.

80905165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3860.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 80905165 is about 8994.7298458597. The cubic root of 80905165 is about 432.5059462134.

The spelling of 80905165 in words is "eighty million, nine hundred five thousand, one hundred sixty-five".