86185812 has 12 divisors (see below), whose sum is σ = 201100256. Its totient is φ = 28728600.

The previous prime is 86185793. The next prime is 86185819. The reversal of 86185812 is 21858168.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86185819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3591064 + ... + 3591087.

Almost surely, 2^86185812 is an apocalyptic number.

It is an amenable number.

86185812 is an abundant number, since it is smaller than the sum of its proper divisors (114914444).

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

86185812 is a wasteful number, since it uses less digits than its factorization.

86185812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7182158 (or 7182156 counting only the distinct ones).

The product of its digits is 30720, while the sum is 39.

The square root of 86185812 is about 9283.6314015583. The cubic root of 86185812 is about 441.7181648902.

The spelling of 86185812 in words is "eighty-six million, one hundred eighty-five thousand, eight hundred twelve".