85858590 has 32 divisors (see below), whose sum is σ = 207384480. Its totient is φ = 22748544.

The previous prime is 85858571. The next prime is 85858601. The reversal of 85858590 is 9585858.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4405 + ... + 13824.

It is an arithmetic number, because the mean of its divisors is an integer number (6480765).

Almost surely, 2^85858590 is an apocalyptic number.

85858590 is an abundant number, since it is smaller than the sum of its proper divisors (121525890).

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

85858590 is a wasteful number, since it uses less digits than its factorization.

85858590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18396.

The product of its (nonzero) digits is 576000, while the sum is 48.

The square root of 85858590 is about 9265.9910425167. The cubic root of 85858590 is about 441.1584315657.

The spelling of 85858590 in words is "eighty-five million, eight hundred fifty-eight thousand, five hundred ninety".