5685813 has 18 divisors (see below), whose sum is σ = 9554454. Its totient is φ = 3248784.

The previous prime is 5685809. The next prime is 5685829. The reversal of 5685813 is 3185865.

It can be written as a sum of positive squares in only one way, i.e., 5049009 + 636804 = 2247^2 + 798^2 .

It is not a de Polignac number, because 5685813 - 2² = 5685809 is a prime.

5685813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5685833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6006 + ... + 6887.

It is an arithmetic number, because the mean of its divisors is an integer number (530803).

Almost surely, 2^5685813 is an apocalyptic number.

It is an amenable number.

5685813 is a deficient number, since it is larger than the sum of its proper divisors (3868641).

5685813 is a wasteful number, since it uses less digits than its factorization.

5685813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12913 (or 12903 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 5685813 is about 2384.4942860070. The cubic root of 5685813 is about 178.4832740960.

The spelling of 5685813 in words is "five million, six hundred eighty-five thousand, eight hundred thirteen".