5666039 has 4 divisors (see below), whose sum is σ = 5673024. Its totient is φ = 5659056.

The previous prime is 5666021. The next prime is 5666051. The reversal of 5666039 is 9306665.

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 5666039 - 2⁸ = 5665783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666539) 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, 2087 + ... + 3960.

It is an arithmetic number, because the mean of its divisors is an integer number (1418256).

Almost surely, 2^5666039 is an apocalyptic number.

5666039 is a deficient number, since it is larger than the sum of its proper divisors (6985).

5666039 is an equidigital number, since it uses as much as digits as its factorization.

5666039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6984.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 5666039 is about 2380.3443028268. The cubic root of 5666039 is about 178.2761253210.

The spelling of 5666039 in words is "five million, six hundred sixty-six thousand, thirty-nine".