80056985 has 4 divisors (see below), whose sum is σ = 96068388. Its totient is φ = 64045584.

The previous prime is 80056981. The next prime is 80056993. The reversal of 80056985 is 58965008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58079641 + 21977344 = 7621^2 + 4688^2 .

It is a cyclic number.

It is not a de Polignac number, because 80056985 - 2² = 80056981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80056981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8005694 + ... + 8005703.

It is an arithmetic number, because the mean of its divisors is an integer number (24017097).

Almost surely, 2^80056985 is an apocalyptic number.

It is an amenable number.

80056985 is a deficient number, since it is larger than the sum of its proper divisors (16011403).

80056985 is a wasteful number, since it uses less digits than its factorization.

80056985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16011402.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 80056985 is about 8947.4569012653. The cubic root of 80056985 is about 430.9892224414.

The spelling of 80056985 in words is "eighty million, fifty-six thousand, nine hundred eighty-five".