85689824 has 24 divisors (see below), whose sum is σ = 184039128. Its totient is φ = 38949760.

The previous prime is 85689803. The next prime is 85689833. The reversal of 85689824 is 42898658.

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, 121367 + ... + 122070.

It is an arithmetic number, because the mean of its divisors is an integer number (7668297).

Almost surely, 2^85689824 is an apocalyptic number.

It is an amenable number.

85689824 is an abundant number, since it is smaller than the sum of its proper divisors (98349304).

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

85689824 is a wasteful number, since it uses less digits than its factorization.

85689824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243458 (or 243450 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 85689824 is about 9256.8798198961. The cubic root of 85689824 is about 440.8691909310.

The spelling of 85689824 in words is "eighty-five million, six hundred eighty-nine thousand, eight hundred twenty-four".