23685 has 8 divisors (see below), whose sum is σ = 37920. Its totient is φ = 12624.

The previous prime is 23677. The next prime is 23687. The reversal of 23685 is 58632.

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

It is not a de Polignac number, because 23685 - 2³ = 23677 is a prime.

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775 + ... + 804.

It is an arithmetic number, because the mean of its divisors is an integer number (4740).

2²³⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

23685 is a deficient number, since it is larger than the sum of its proper divisors (14235).

23685 is a wasteful number, since it uses less digits than its factorization.

23685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587.

The product of its digits is 1440, while the sum is 24.

The square root of 23685 is about 153.8993177373. The cubic root of 23685 is about 28.7182383962.

The spelling of 23685 in words is "twenty-three thousand, six hundred eighty-five".