85637090 has 32 divisors (see below), whose sum is σ = 192184704. Its totient is φ = 26691840.

The previous prime is 85637089. The next prime is 85637117. The reversal of 85637090 is 9073658.

It is a super-2 number, since 2×85637090² = 14667422367336200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54839 + ... + 56378.

It is an arithmetic number, because the mean of its divisors is an integer number (6005772).

Almost surely, 2^85637090 is an apocalyptic number.

85637090 is an abundant number, since it is smaller than the sum of its proper divisors (106547614).

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

85637090 is a wasteful number, since it uses less digits than its factorization.

85637090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111242.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 85637090 is about 9254.0310135638. The cubic root of 85637090 is about 440.7787345788.

The spelling of 85637090 in words is "eighty-five million, six hundred thirty-seven thousand, ninety".