85810812 has 36 divisors (see below), whose sum is σ = 202515768. Its totient is φ = 28280000.

The previous prime is 85810811. The next prime is 85810819. The reversal of 85810812 is 21801858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85810811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122062 + ... + 122762.

It is an arithmetic number, because the mean of its divisors is an integer number (5625438).

Almost surely, 2^85810812 is an apocalyptic number.

It is an amenable number.

85810812 is an abundant number, since it is smaller than the sum of its proper divisors (116704956).

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

85810812 is a wasteful number, since it uses less digits than its factorization.

85810812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 33.

The square root of 85810812 is about 9263.4125461409. The cubic root of 85810812 is about 441.0765854415.

The spelling of 85810812 in words is "eighty-five million, eight hundred ten thousand, eight hundred twelve".