80974945 has 16 divisors (see below), whose sum is σ = 100703232. Its totient is φ = 62441280.

The previous prime is 80974939. The next prime is 80974967. The reversal of 80974945 is 54947908.

It is not a de Polignac number, because 80974945 - 2⁵ = 80974913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80974895 and 80974904.

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, 44524 + ... + 46306.

It is an arithmetic number, because the mean of its divisors is an integer number (6293952).

Almost surely, 2^80974945 is an apocalyptic number.

It is an amenable number.

80974945 is a deficient number, since it is larger than the sum of its proper divisors (19728287).

80974945 is a wasteful number, since it uses less digits than its factorization.

80974945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 80974945 is about 8998.6079478995. The cubic root of 80974945 is about 432.6302546855.

The spelling of 80974945 in words is "eighty million, nine hundred seventy-four thousand, nine hundred forty-five".