85805712 has 30 divisors (see below), whose sum is σ = 240137222. Its totient is φ = 28601856.

The previous prime is 85805689. The next prime is 85805723. The reversal of 85805712 is 21750858.

85805712 is a `hidden beast` number, since 8 + 5 + 80 + 571 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 67963536 + 17842176 = 8244^2 + 4224^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 297793 + ... + 298080.

Almost surely, 2^85805712 is an apocalyptic number.

It is an amenable number.

85805712 is an abundant number, since it is smaller than the sum of its proper divisors (154331510).

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

85805712 is a wasteful number, since it uses less digits than its factorization.

85805712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595887 (or 595878 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 85805712 is about 9263.1372655273. The cubic root of 85805712 is about 441.0678470898.

The spelling of 85805712 in words is "eighty-five million, eight hundred five thousand, seven hundred twelve".