5566839 has 4 divisors (see below), whose sum is σ = 7422456. Its totient is φ = 3711224.

The previous prime is 5566807. The next prime is 5566843. The reversal of 5566839 is 9386655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5566839 - 2⁵ = 5566807 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 5566839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5566849) 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, 927804 + ... + 927809.

It is an arithmetic number, because the mean of its divisors is an integer number (1855614).

Almost surely, 2^5566839 is an apocalyptic number.

5566839 is a deficient number, since it is larger than the sum of its proper divisors (1855617).

5566839 is a wasteful number, since it uses less digits than its factorization.

5566839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855616.

The product of its digits is 194400, while the sum is 42.

The square root of 5566839 is about 2359.4149698601. The cubic root of 5566839 is about 177.2295849351.

The spelling of 5566839 in words is "five million, five hundred sixty-six thousand, eight hundred thirty-nine".