85537790 has 16 divisors (see below), whose sum is σ = 165811968. Its totient is φ = 31583136.

The previous prime is 85537789. The next prime is 85537807. The reversal of 85537790 is 9773558.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328862 + ... + 329121.

It is an arithmetic number, because the mean of its divisors is an integer number (10363248).

Almost surely, 2^85537790 is an apocalyptic number.

85537790 is a deficient number, since it is larger than the sum of its proper divisors (80274178).

85537790 is a wasteful number, since it uses less digits than its factorization.

85537790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658003.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 85537790 is about 9248.6642278764. The cubic root of 85537790 is about 440.6083011964.

The spelling of 85537790 in words is "eighty-five million, five hundred thirty-seven thousand, seven hundred ninety".