85858871 has 16 divisors (see below), whose sum is σ = 102359040. Its totient is φ = 70467840.

The previous prime is 85858867. The next prime is 85858889. The reversal of 85858871 is 17885858.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85858871 - 2² = 85858867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85858811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19010 + ... + 23088.

It is an arithmetic number, because the mean of its divisors is an integer number (6397440).

Almost surely, 2^85858871 is an apocalyptic number.

85858871 is a deficient number, since it is larger than the sum of its proper divisors (16500169).

85858871 is a wasteful number, since it uses less digits than its factorization.

85858871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214.

The product of its digits is 716800, while the sum is 50.

The square root of 85858871 is about 9266.0062054803. The cubic root of 85858871 is about 441.1589128430.

The spelling of 85858871 in words is "eighty-five million, eight hundred fifty-eight thousand, eight hundred seventy-one".