85259631 has 8 divisors (see below), whose sum is σ = 119662720. Its totient is φ = 53848152.

The previous prime is 85259627. The next prime is 85259651. The reversal of 85259631 is 13695258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85259631 - 2² = 85259627 is a prime.

It is a super-2 number, since 2×85259631² = 14538409356512322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85259631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85259651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747835 + ... + 747948.

It is an arithmetic number, because the mean of its divisors is an integer number (14957840).

Almost surely, 2^85259631 is an apocalyptic number.

85259631 is a deficient number, since it is larger than the sum of its proper divisors (34403089).

85259631 is a wasteful number, since it uses less digits than its factorization.

85259631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495805.

The product of its digits is 64800, while the sum is 39.

The square root of 85259631 is about 9233.6141894710. The cubic root of 85259631 is about 440.1301801445.

The spelling of 85259631 in words is "eighty-five million, two hundred fifty-nine thousand, six hundred thirty-one".