5666839 has 4 divisors (see below), whose sum is σ = 5759800. Its totient is φ = 5573880.

The previous prime is 5666833. The next prime is 5666849. The reversal of 5666839 is 9386665.

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 5666839 - 2⁷ = 5666711 is a prime.

It is a super-2 number, since 2×5666839² = 64226128503842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5666795 and 5666804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666833) 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, 46389 + ... + 46510.

It is an arithmetic number, because the mean of its divisors is an integer number (1439950).

Almost surely, 2^5666839 is an apocalyptic number.

5666839 is a deficient number, since it is larger than the sum of its proper divisors (92961).

5666839 is an equidigital number, since it uses as much as digits as its factorization.

5666839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92960.

The product of its digits is 233280, while the sum is 43.

The square root of 5666839 is about 2380.5123398126. The cubic root of 5666839 is about 178.2845153202.

The spelling of 5666839 in words is "five million, six hundred sixty-six thousand, eight hundred thirty-nine".