85861856 has 24 divisors (see below), whose sum is σ = 172640160. Its totient is φ = 42016768.

The previous prime is 85861843. The next prime is 85861877. The reversal of 85861856 is 65816858.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 85861856.

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, 27041 + ... + 30048.

It is an arithmetic number, because the mean of its divisors is an integer number (7193340).

Almost surely, 2^85861856 is an apocalyptic number.

It is an amenable number.

85861856 is an abundant number, since it is smaller than the sum of its proper divisors (86778304).

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

85861856 is a wasteful number, since it uses less digits than its factorization.

85861856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57146 (or 57138 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The square root of 85861856 is about 9266.1672767116. The cubic root of 85861856 is about 441.1640252796.

The spelling of 85861856 in words is "eighty-five million, eight hundred sixty-one thousand, eight hundred fifty-six".