86666687 has 8 divisors (see below), whose sum is σ = 88552800. Its totient is φ = 84801024.

The previous prime is 86666677. The next prime is 86666707. The reversal of 86666687 is 78666668.

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 86666687 - 2⁶ = 86666623 is a prime.

It is a super-2 number, since 2×86666687² = 15022229271111938, 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 (86666677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3614 + ... + 13652.

It is an arithmetic number, because the mean of its divisors is an integer number (11069100).

Almost surely, 2^86666687 is an apocalyptic number.

86666687 is a deficient number, since it is larger than the sum of its proper divisors (1886113).

86666687 is a wasteful number, since it uses less digits than its factorization.

86666687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10225.

The product of its digits is 3483648, while the sum is 53.

The square root of 86666687 is about 9309.4944545877. The cubic root of 86666687 is about 442.5381660293.

The spelling of 86666687 in words is "eighty-six million, six hundred sixty-six thousand, six hundred eighty-seven".