85621584 has 20 divisors (see below), whose sum is σ = 221189216. Its totient is φ = 28540512.

The previous prime is 85621583. The next prime is 85621621. The reversal of 85621584 is 48512658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85621583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891844 + ... + 891939.

Almost surely, 2^85621584 is an apocalyptic number.

It is an amenable number.

85621584 is an abundant number, since it is smaller than the sum of its proper divisors (135567632).

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

85621584 is a wasteful number, since it uses less digits than its factorization.

85621584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783794 (or 1783788 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 85621584 is about 9253.1931785735. The cubic root of 85621584 is about 440.7521295661.

The spelling of 85621584 in words is "eighty-five million, six hundred twenty-one thousand, five hundred eighty-four".