80920975 has 12 divisors (see below), whose sum is σ = 100707840. Its totient is φ = 64500800.

The previous prime is 80920967. The next prime is 80921017. The reversal of 80920975 is 57902908.

It is not a de Polignac number, because 80920975 - 2³ = 80920967 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 1266 + ... + 12784.

It is an arithmetic number, because the mean of its divisors is an integer number (8392320).

Almost surely, 2^80920975 is an apocalyptic number.

80920975 is a deficient number, since it is larger than the sum of its proper divisors (19786865).

80920975 is a wasteful number, since it uses less digits than its factorization.

80920975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11810 (or 11805 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 80920975 is about 8995.6086508918. The cubic root of 80920975 is about 432.5341169474.

The spelling of 80920975 in words is "eighty million, nine hundred twenty thousand, nine hundred seventy-five".