86855812 has 48 divisors (see below), whose sum is σ = 163296000. Its totient is φ = 40350464.

The previous prime is 86855803. The next prime is 86855819. The reversal of 86855812 is 21855868.

It is not an unprimeable number, because it can be changed into a prime (86855819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485139 + ... + 485317.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 2^86855812 is an apocalyptic number.

It is an amenable number.

86855812 is a deficient number, since it is larger than the sum of its proper divisors (76440188).

86855812 is a wasteful number, since it uses less digits than its factorization.

86855812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 346 counting only the distinct ones).

The product of its digits is 153600, while the sum is 43.

The square root of 86855812 is about 9319.6465598219. The cubic root of 86855812 is about 442.8598360472.

The spelling of 86855812 in words is "eighty-six million, eight hundred fifty-five thousand, eight hundred twelve".