85685687024 has 20 divisors (see below), whose sum is σ = 189732592944. Its totient is φ = 36722437248.

The previous prime is 85685687011. The next prime is 85685687033. The reversal of 85685687024 is 42078658658.

It is a happy number.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382525277 + ... + 382525500.

Almost surely, 2^85685687024 is an apocalyptic number.

It is an amenable number.

85685687024 is an abundant number, since it is smaller than the sum of its proper divisors (104046905920).

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

85685687024 is a wasteful number, since it uses less digits than its factorization.

85685687024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765050792 (or 765050786 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 85685687024 in words is "eighty-five billion, six hundred eighty-five million, six hundred eighty-seven thousand, twenty-four".