5566689 has 6 divisors (see below), whose sum is σ = 8040786. Its totient is φ = 3711120.

The previous prime is 5566681. The next prime is 5566697. The reversal of 5566689 is 9866655.

It is an interprime number because it is at equal distance from previous prime (5566681) and next prime (5566697).

It can be written as a sum of positive squares in only one way, i.e., 3629025 + 1937664 = 1905^2 + 1392^2 .

It is not a de Polignac number, because 5566689 - 2³ = 5566681 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (5566681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 309252 + ... + 309269.

It is an arithmetic number, because the mean of its divisors is an integer number (1340131).

Almost surely, 2^5566689 is an apocalyptic number.

It is an amenable number.

5566689 is a deficient number, since it is larger than the sum of its proper divisors (2474097).

5566689 is a wasteful number, since it uses less digits than its factorization.

5566689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618527 (or 618524 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 5566689 is about 2359.3831821050. The cubic root of 5566689 is about 177.2279930875.

It can be divided in two parts, 55666 and 89, that added together give a palindrome (55755).

The spelling of 5566689 in words is "five million, five hundred sixty-six thousand, six hundred eighty-nine".