85111776 has 96 divisors (see below), whose sum is σ = 259096320. Its totient is φ = 27130752.

The previous prime is 85111751. The next prime is 85111823. The reversal of 85111776 is 67711158.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 85111776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17731 + ... + 22013.

It is an arithmetic number, because the mean of its divisors is an integer number (2698920).

Almost surely, 2^85111776 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 85111776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129548160).

85111776 is an abundant number, since it is smaller than the sum of its proper divisors (173984544).

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

85111776 is a wasteful number, since it uses less digits than its factorization.

85111776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325 (or 4311 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

The square root of 85111776 is about 9225.6043704464. The cubic root of 85111776 is about 439.8756122219.

The spelling of 85111776 in words is "eighty-five million, one hundred eleven thousand, seven hundred seventy-six".