86684317 has 4 divisors (see below), whose sum is σ = 86702940. Its totient is φ = 86665696.

The previous prime is 86684293. The next prime is 86684357. The reversal of 86684317 is 71348668.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 58583716 + 28100601 = 7654^2 + 5301^2 .

It is a cyclic number.

It is not a de Polignac number, because 86684317 - 2¹⁵ = 86651549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86684357) 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, 4503 + ... + 13915.

It is an arithmetic number, because the mean of its divisors is an integer number (21675735).

Almost surely, 2^86684317 is an apocalyptic number.

It is an amenable number.

86684317 is a deficient number, since it is larger than the sum of its proper divisors (18623).

86684317 is an equidigital number, since it uses as much as digits as its factorization.

86684317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18622.

The product of its digits is 193536, while the sum is 43.

The square root of 86684317 is about 9310.4412892193. The cubic root of 86684317 is about 442.5681714796.

The spelling of 86684317 in words is "eighty-six million, six hundred eighty-four thousand, three hundred seventeen".