5666863 has 4 divisors (see below), whose sum is σ = 5674968. Its totient is φ = 5658760.

The previous prime is 5666849. The next prime is 5666873. The reversal of 5666863 is 3686665.

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 5666863 - 2¹⁷ = 5535791 is a prime.

It is a super-2 number, since 2×5666863² = 64226672521538, which contains 22 as substring.

It is a Duffinian number.

5666863 is a lucky number.

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 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, 2893 + ... + 4438.

It is an arithmetic number, because the mean of its divisors is an integer number (1418742).

Almost surely, 2^5666863 is an apocalyptic number.

5666863 is a deficient number, since it is larger than the sum of its proper divisors (8105).

5666863 is an equidigital number, since it uses as much as digits as its factorization.

5666863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8104.

The product of its digits is 155520, while the sum is 40.

The square root of 5666863 is about 2380.5173807389. The cubic root of 5666863 is about 178.2847670080.

The spelling of 5666863 in words is "five million, six hundred sixty-six thousand, eight hundred sixty-three".