86655588 has 12 divisors (see below), whose sum is σ = 202196400. Its totient is φ = 28885192.

The previous prime is 86655587. The next prime is 86655593. The reversal of 86655588 is 88555668.

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

It is a self number, because there is not a number n which added to its sum of digits gives 86655588.

It is not an unprimeable number, because it can be changed into a prime (86655581) 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, 3610638 + ... + 3610661.

It is an arithmetic number, because the mean of its divisors is an integer number (16849700).

Almost surely, 2^86655588 is an apocalyptic number.

It is an amenable number.

86655588 is an abundant number, since it is smaller than the sum of its proper divisors (115540812).

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

86655588 is a wasteful number, since it uses less digits than its factorization.

86655588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221306 (or 7221304 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 51.

The square root of 86655588 is about 9308.8983236471. The cubic root of 86655588 is about 442.5192739538.

The spelling of 86655588 in words is "eighty-six million, six hundred fifty-five thousand, five hundred eighty-eight".