86388655 has 4 divisors (see below), whose sum is σ = 103666392. Its totient is φ = 69110920.

The previous prime is 86388623. The next prime is 86388671. The reversal of 86388655 is 55688368.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86388655 - 2⁵ = 86388623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86388599 and 86388608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8638861 + ... + 8638870.

It is an arithmetic number, because the mean of its divisors is an integer number (25916598).

Almost surely, 2^86388655 is an apocalyptic number.

86388655 is a deficient number, since it is larger than the sum of its proper divisors (17277737).

86388655 is a wasteful number, since it uses less digits than its factorization.

86388655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17277736.

The product of its digits is 1382400, while the sum is 49.

The square root of 86388655 is about 9294.5497470292. The cubic root of 86388655 is about 442.0644292966.

The spelling of 86388655 in words is "eighty-six million, three hundred eighty-eight thousand, six hundred fifty-five".