85111656 has 96 divisors (see below), whose sum is σ = 258469440. Its totient is φ = 22874112.

The previous prime is 85111633. The next prime is 85111657. The reversal of 85111656 is 65611158.

It is not an unprimeable number, because it can be changed into a prime (85111657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47676 + ... + 49428.

It is an arithmetic number, because the mean of its divisors is an integer number (2692390).

Almost surely, 2^85111656 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 85111656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129234720).

85111656 is an abundant number, since it is smaller than the sum of its proper divisors (173357784).

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

85111656 is a wasteful number, since it uses less digits than its factorization.

85111656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803 (or 1782 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

The square root of 85111656 is about 9225.5978668052. The cubic root of 85111656 is about 439.8754054933.

The spelling of 85111656 in words is "eighty-five million, one hundred eleven thousand, six hundred fifty-six".