115685 has 8 divisors (see below), whose sum is σ = 147096. Its totient is φ = 87040.

The previous prime is 115679. The next prime is 115693. The reversal of 115685 is 586511.

115685 = 41² + 42² + ... + 74².

It can be written as a sum of positive squares in 4 ways, for example, as 9409 + 106276 = 97^2 + 326^2 .

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

It is not a de Polignac number, because 115685 - 2⁸ = 115429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596 + ... + 765.

It is an arithmetic number, because the mean of its divisors is an integer number (18387).

2¹¹⁵⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

115685 is a deficient number, since it is larger than the sum of its proper divisors (31411).

115685 is a wasteful number, since it uses less digits than its factorization.

115685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383.

The product of its digits is 1200, while the sum is 26.

The square root of 115685 is about 340.1249770305. The cubic root of 115685 is about 48.7258043421.

The spelling of 115685 in words is "one hundred fifteen thousand, six hundred eighty-five".