86688438 has 16 divisors (see below), whose sum is σ = 175572480. Its totient is φ = 28530216.

The previous prime is 86688421. The next prime is 86688439. The reversal of 86688438 is 83488668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86688439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90970 + ... + 91917.

It is an arithmetic number, because the mean of its divisors is an integer number (10973280).

Almost surely, 2^86688438 is an apocalyptic number.

86688438 is an abundant number, since it is smaller than the sum of its proper divisors (88884042).

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

86688438 is a wasteful number, since it uses less digits than its factorization.

86688438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182971.

The product of its digits is 1769472, while the sum is 51.

The square root of 86688438 is about 9310.6625972591. The cubic root of 86688438 is about 442.5751846457.

The spelling of 86688438 in words is "eighty-six million, six hundred eighty-eight thousand, four hundred thirty-eight".