85111671 has 4 divisors (see below), whose sum is σ = 113482232. Its totient is φ = 56741112.

The previous prime is 85111657. The next prime is 85111687. The reversal of 85111671 is 17611158.

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

It is not a de Polignac number, because 85111671 - 2²⁵ = 51557239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85111601) 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, 14185276 + ... + 14185281.

It is an arithmetic number, because the mean of its divisors is an integer number (28370558).

Almost surely, 2^85111671 is an apocalyptic number.

85111671 is a deficient number, since it is larger than the sum of its proper divisors (28370561).

85111671 is a wasteful number, since it uses less digits than its factorization.

85111671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28370560.

The product of its digits is 1680, while the sum is 30.

The square root of 85111671 is about 9225.5986797606. The cubic root of 85111671 is about 439.8754313344.

The spelling of 85111671 in words is "eighty-five million, one hundred eleven thousand, six hundred seventy-one".