5656566 has 48 divisors (see below), whose sum is σ = 12542400. Its totient is φ = 1695456.

The previous prime is 5656559. The next prime is 5656577. The reversal of 5656566 is 6656565.

It is a happy number.

5656566 is a nontrivial binomial coefficient, being equal to C(3364, 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95845 + ... + 95903.

It is an arithmetic number, because the mean of its divisors is an integer number (261300).

Almost surely, 2^5656566 is an apocalyptic number.

5656566 is the 3363-rd triangular number and also the 1682-nd hexagonal number.

5656566 is an abundant number, since it is smaller than the sum of its proper divisors (6885834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5656566 is a wasteful number, since it uses less digits than its factorization.

5656566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 112 counting only the distinct ones).

The product of its digits is 162000, while the sum is 39.

The square root of 5656566 is about 2378.3536322423. The cubic root of 5656566 is about 178.1767171466.

Subtracting 5656566 from its reverse (6656565), we obtain a palindrome (999999).

The spelling of 5656566 in words is "five million, six hundred fifty-six thousand, five hundred sixty-six".