5685 has 8 divisors (see below), whose sum is σ = 9120. Its totient is φ = 3024.

The previous prime is 5683. The next prime is 5689. The reversal of 5685 is 5865.

5685 = 21² + 22² + ... + 29².

5685 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 5685 - 2¹ = 5683 is a prime.

It is an Ulam number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5683) 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, 175 + ... + 204.

It is an arithmetic number, because the mean of its divisors is an integer number (1140).

2⁵⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

5685 is a deficient number, since it is larger than the sum of its proper divisors (3435).

5685 is a wasteful number, since it uses less digits than its factorization.

5685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387.

The product of its digits is 1200, while the sum is 24.

The square root of 5685 is about 75.3989389846. The cubic root of 5685 is about 17.8474766733.

It can be divided in two parts, 56 and 85, that added together give a palindrome (141).

The spelling of 5685 in words is "five thousand, six hundred eighty-five".