85844631 has 8 divisors (see below), whose sum is σ = 115472880. Its totient is φ = 56723072.

The previous prime is 85844623. The next prime is 85844651. The reversal of 85844631 is 13644858.

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

It is a cyclic number.

It is not a de Polignac number, because 85844631 - 2³ = 85844623 is a prime.

It is a super-2 number, since 2×85844631² = 14738601343052322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85844631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85844651) 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, 126276 + ... + 126953.

It is an arithmetic number, because the mean of its divisors is an integer number (14434110).

Almost surely, 2^85844631 is an apocalyptic number.

85844631 is a deficient number, since it is larger than the sum of its proper divisors (29628249).

85844631 is a wasteful number, since it uses less digits than its factorization.

85844631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253345.

The product of its digits is 92160, while the sum is 39.

The square root of 85844631 is about 9265.2377735275. The cubic root of 85844631 is about 441.1345222348.

The spelling of 85844631 in words is "eighty-five million, eight hundred forty-four thousand, six hundred thirty-one".