86688667 has 4 divisors (see below), whose sum is σ = 93357040. Its totient is φ = 80020296.

The previous prime is 86688653. The next prime is 86688671. The reversal of 86688667 is 76688668.

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

It is a cyclic number.

It is not a de Polignac number, because 86688667 - 2¹¹ = 86686619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86688607) 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, 3334167 + ... + 3334192.

It is an arithmetic number, because the mean of its divisors is an integer number (23339260).

Almost surely, 2^86688667 is an apocalyptic number.

86688667 is a deficient number, since it is larger than the sum of its proper divisors (6668373).

86688667 is a wasteful number, since it uses less digits than its factorization.

86688667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6668372.

The product of its digits is 4644864, while the sum is 55.

The square root of 86688667 is about 9310.6748949794. The cubic root of 86688667 is about 442.5755743540.

Subtracting from 86688667 its reverse (76688668), we obtain a palindrome (9999999).

The spelling of 86688667 in words is "eighty-six million, six hundred eighty-eight thousand, six hundred sixty-seven".