5685921 has 24 divisors (see below), whose sum is σ = 8867040. Its totient is φ = 3499200.

The previous prime is 5685887. The next prime is 5685961. The reversal of 5685921 is 1295865.

It is a happy number.

5685921 is a `hidden beast` number, since 5 + 68 + 592 + 1 = 666.

5685921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5685921 - 2⁶ = 5685857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5685961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6606 + ... + 7416.

It is an arithmetic number, because the mean of its divisors is an integer number (369460).

Almost surely, 2^5685921 is an apocalyptic number.

It is an amenable number.

5685921 is a deficient number, since it is larger than the sum of its proper divisors (3181119).

5685921 is a wasteful number, since it uses less digits than its factorization.

5685921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 874 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 5685921 is about 2384.5169322108. The cubic root of 5685921 is about 178.4844041643.

The spelling of 5685921 in words is "five million, six hundred eighty-five thousand, nine hundred twenty-one".