80864973 has 20 divisors (see below), whose sum is σ = 138056160. Its totient is φ = 46208232.

The previous prime is 80864951. The next prime is 80864977. The reversal of 80864973 is 37946808.

It is a happy number.

80864973 is a `hidden beast` number, since 80 + 86 + 497 + 3 = 666.

It is not a de Polignac number, because 80864973 - 2⁸ = 80864717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80864977) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70743 + ... + 71876.

It is an arithmetic number, because the mean of its divisors is an integer number (6902808).

Almost surely, 2^80864973 is an apocalyptic number.

It is an amenable number.

80864973 is a deficient number, since it is larger than the sum of its proper divisors (57191187).

80864973 is a wasteful number, since it uses less digits than its factorization.

80864973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142638 (or 142629 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 80864973 is about 8992.4953711414. The cubic root of 80864973 is about 432.4343143699.

The spelling of 80864973 in words is "eighty million, eight hundred sixty-four thousand, nine hundred seventy-three".