85931776 has 72 divisors (see below), whose sum is σ = 198840320. Its totient is φ = 36301824.

The previous prime is 85931773. The next prime is 85931779. The reversal of 85931776 is 67713958.

It is an interprime number because it is at equal distance from previous prime (85931773) and next prime (85931779).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85931773) 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, 141265 + ... + 141871.

Almost surely, 2^85931776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85931776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99420160).

85931776 is an abundant number, since it is smaller than the sum of its proper divisors (112908544).

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

85931776 is an equidigital number, since it uses as much as digits as its factorization.

85931776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 695 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The square root of 85931776 is about 9269.9393741275. The cubic root of 85931776 is about 441.2837440188.

The spelling of 85931776 in words is "eighty-five million, nine hundred thirty-one thousand, seven hundred seventy-six".