86678638 has 8 divisors (see below), whose sum is σ = 132471288. Its totient is φ = 42521544.

The previous prime is 86678623. The next prime is 86678659. The reversal of 86678638 is 83687668.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 408756 + ... + 408967.

It is an arithmetic number, because the mean of its divisors is an integer number (16558911).

Almost surely, 2^86678638 is an apocalyptic number.

86678638 is a deficient number, since it is larger than the sum of its proper divisors (45792650).

86678638 is a wasteful number, since it uses less digits than its factorization.

86678638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817778.

The product of its digits is 2322432, while the sum is 52.

The square root of 86678638 is about 9310.1363040505. The cubic root of 86678638 is about 442.5585065266.

The spelling of 86678638 in words is "eighty-six million, six hundred seventy-eight thousand, six hundred thirty-eight".