5811689 has 4 divisors (see below), whose sum is σ = 6258756. Its totient is φ = 5364624.

The previous prime is 5811667. The next prime is 5811727. The reversal of 5811689 is 9861185.

5811689 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.

It can be written as a sum of positive squares in 2 ways, for example, as 672400 + 5139289 = 820^2 + 2267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5811689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5811649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223514 + ... + 223539.

It is an arithmetic number, because the mean of its divisors is an integer number (1564689).

Almost surely, 2^5811689 is an apocalyptic number.

It is an amenable number.

5811689 is a deficient number, since it is larger than the sum of its proper divisors (447067).

5811689 is a wasteful number, since it uses less digits than its factorization.

5811689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447066.

The product of its digits is 17280, while the sum is 38.

The square root of 5811689 is about 2410.7444908161. The cubic root of 5811689 is about 179.7907960428.

The spelling of 5811689 in words is "five million, eight hundred eleven thousand, six hundred eighty-nine".