85681156 has 24 divisors (see below), whose sum is σ = 173196576. Its totient is φ = 36654720.

The previous prime is 85681153. The next prime is 85681163. The reversal of 85681156 is 65118658.

It is not an unprimeable number, because it can be changed into a prime (85681151) 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, 56526 + ... + 58021.

It is an arithmetic number, because the mean of its divisors is an integer number (7216524).

Almost surely, 2^85681156 is an apocalyptic number.

It is an amenable number.

85681156 is an abundant number, since it is smaller than the sum of its proper divisors (87515420).

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

85681156 is a wasteful number, since it uses less digits than its factorization.

85681156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114579 (or 114577 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 85681156 is about 9256.4116157397. The cubic root of 85681156 is about 440.8543249768.

The spelling of 85681156 in words is "eighty-five million, six hundred eighty-one thousand, one hundred fifty-six".