80085871 has 4 divisors (see below), whose sum is σ = 82250392. Its totient is φ = 77921352.

The previous prime is 80085847. The next prime is 80085877. The reversal of 80085871 is 17858008.

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

It is a cyclic number.

It is not a de Polignac number, because 80085871 - 2⁷ = 80085743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 2164483 = 80085871 / (8 + 0 + 0 + 8 + 5 + 8 + 7 + 1).

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 80085871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80085877) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1082205 + ... + 1082278.

It is an arithmetic number, because the mean of its divisors is an integer number (20562598).

Almost surely, 2^80085871 is an apocalyptic number.

80085871 is a deficient number, since it is larger than the sum of its proper divisors (2164521).

80085871 is a wasteful number, since it uses less digits than its factorization.

80085871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164520.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 80085871 is about 8949.0709573676. The cubic root of 80085871 is about 431.0410524291.

The spelling of 80085871 in words is "eighty million, eighty-five thousand, eight hundred seventy-one".