5665589 has 4 divisors (see below), whose sum is σ = 5671020. Its totient is φ = 5660160.

The previous prime is 5665579. The next prime is 5665601. The reversal of 5665589 is 9855665.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 180625 + 5484964 = 425^2 + 2342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5665589 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 (5665519) 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, 602 + ... + 3419.

It is an arithmetic number, because the mean of its divisors is an integer number (1417755).

Almost surely, 2^5665589 is an apocalyptic number.

It is an amenable number.

5665589 is a deficient number, since it is larger than the sum of its proper divisors (5431).

5665589 is a wasteful number, since it uses less digits than its factorization.

5665589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5430.

The product of its digits is 324000, while the sum is 44.

The square root of 5665589 is about 2380.2497768091. The cubic root of 5665589 is about 178.2714055994.

The spelling of 5665589 in words is "five million, six hundred sixty-five thousand, five hundred eighty-nine".