86668679 has 8 divisors (see below), whose sum is σ = 87386400. Its totient is φ = 85954176.

The previous prime is 86668667. The next prime is 86668691. The reversal of 86668679 is 97686668.

It is an interprime number because it is at equal distance from previous prime (86668667) and next prime (86668691).

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

It is a cyclic number.

It is not a de Polignac number, because 86668679 - 2²⁰ = 85620103 is a prime.

It is a super-2 number, since 2×86668679² = 15022919839210082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86668619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90467 + ... + 91419.

It is an arithmetic number, because the mean of its divisors is an integer number (10923300).

Almost surely, 2^86668679 is an apocalyptic number.

86668679 is a deficient number, since it is larger than the sum of its proper divisors (717721).

86668679 is a wasteful number, since it uses less digits than its factorization.

86668679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609.

The product of its digits is 5225472, while the sum is 56.

The square root of 86668679 is about 9309.6014415226. The cubic root of 86668679 is about 442.5415565257.

The spelling of 86668679 in words is "eighty-six million, six hundred sixty-eight thousand, six hundred seventy-nine".