6565775656 has 16 divisors (see below), whose sum is σ = 13429995840. Its totient is φ = 2984443440.

The previous prime is 6565775621. The next prime is 6565775663.

6565775656 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6565775656.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37305456 + ... + 37305631.

It is an arithmetic number, because the mean of its divisors is an integer number (839374740).

Almost surely, 2^6565775656 is an apocalyptic number.

It is an amenable number.

6565775656 is an abundant number, since it is smaller than the sum of its proper divisors (6864220184).

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

6565775656 is a wasteful number, since it uses less digits than its factorization.

6565775656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74611104 (or 74611100 counting only the distinct ones).

The product of its digits is 39690000, while the sum is 58.

The square root of 6565775656 is about 81029.4739955777. The cubic root of 6565775656 is about 1872.5295493681.

The spelling of 6565775656 in words is "six billion, five hundred sixty-five million, seven hundred seventy-five thousand, six hundred fifty-six".