85687637244 has 48 divisors (see below), whose sum is σ = 220874949120. Its totient is φ = 25637264640.

The previous prime is 85687637221. The next prime is 85687637257. The reversal of 85687637244 is 44273678658.

It is a happy number.

It is a congruent number.

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, 4098109 + ... + 4118964.

It is an arithmetic number, because the mean of its divisors is an integer number (4601561440).

Almost surely, 2^85687637244 is an apocalyptic number.

It is an amenable number.

85687637244 is an abundant number, since it is smaller than the sum of its proper divisors (135187311876).

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

85687637244 is a wasteful number, since it uses less digits than its factorization.

85687637244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8217170 (or 8217168 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 60.

The spelling of 85687637244 in words is "eighty-five billion, six hundred eighty-seven million, six hundred thirty-seven thousand, two hundred forty-four".