5685881 has 4 divisors (see below), whose sum is σ = 5694372. Its totient is φ = 5677392.

The previous prime is 5685877. The next prime is 5685887. The reversal of 5685881 is 1885865.

5685881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1885865 = 5 ⋅377173.

It can be written as a sum of positive squares in 2 ways, for example, as 5216656 + 469225 = 2284^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 5685881 - 2² = 5685877 is a prime.

It is a super-2 number, since 2×5685881² = 64658485492322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5685887) 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, 3146 + ... + 4611.

It is an arithmetic number, because the mean of its divisors is an integer number (1423593).

Almost surely, 2^5685881 is an apocalyptic number.

It is an amenable number.

5685881 is a deficient number, since it is larger than the sum of its proper divisors (8491).

5685881 is an equidigital number, since it uses as much as digits as its factorization.

5685881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8490.

The product of its digits is 76800, while the sum is 41.

The square root of 5685881 is about 2384.5085447530. The cubic root of 5685881 is about 178.4839856222.

The spelling of 5685881 in words is "five million, six hundred eighty-five thousand, eight hundred eighty-one".