85808544 has 24 divisors (see below), whose sum is σ = 225247680. Its totient is φ = 28602816.

The previous prime is 85808533. The next prime is 85808581. The reversal of 85808544 is 44580858.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 85808496 and 85808505.

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, 446824 + ... + 447015.

It is an arithmetic number, because the mean of its divisors is an integer number (9385320).

Almost surely, 2^85808544 is an apocalyptic number.

It is an amenable number.

85808544 is an abundant number, since it is smaller than the sum of its proper divisors (139439136).

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

85808544 is a wasteful number, since it uses less digits than its factorization.

85808544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893852 (or 893844 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 42.

The square root of 85808544 is about 9263.2901282428. The cubic root of 85808544 is about 441.0726994878.

It can be divided in two parts, 8580854 and 4, that added together give a palindrome (8580858).

The spelling of 85808544 in words is "eighty-five million, eight hundred eight thousand, five hundred forty-four".