85671586 has 32 divisors (see below), whose sum is σ = 172545408. Its totient is φ = 30810240.

The previous prime is 85671581. The next prime is 85671587. The reversal of 85671586 is 68517658.

It is not an unprimeable number, because it can be changed into a prime (85671581) 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, 19395 + ... + 23398.

It is an arithmetic number, because the mean of its divisors is an integer number (5392044).

Almost surely, 2^85671586 is an apocalyptic number.

85671586 is an abundant number, since it is smaller than the sum of its proper divisors (86873822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85671586 is a wasteful number, since it uses less digits than its factorization.

85671586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42826.

The product of its digits is 403200, while the sum is 46.

The square root of 85671586 is about 9255.8946623220. The cubic root of 85671586 is about 440.8379108932.

It can be divided in two parts, 8567 and 1586, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 85671586 in words is "eighty-five million, six hundred seventy-one thousand, five hundred eighty-six".