6560606565 has 12 divisors (see below), whose sum is σ = 11371718124. Its totient is φ = 3498990144.

The previous prime is 6560606557. The next prime is 6560606593. The reversal of 6560606565 is 5656060656.

It can be written as a sum of positive squares in 2 ways, for example, as 2981815236 + 3578791329 = 54606^2 + 59823^2 .

It is not a de Polignac number, because 6560606565 - 2³ = 6560606557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 145791257 = 6560606565 / (6 + 5 + 6 + 0 + 6 + 0 + 6 + 5 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 6560606565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72895584 + ... + 72895673.

It is an arithmetic number, because the mean of its divisors is an integer number (947643177).

Almost surely, 2^6560606565 is an apocalyptic number.

It is an amenable number.

6560606565 is a deficient number, since it is larger than the sum of its proper divisors (4811111559).

6560606565 is a wasteful number, since it uses less digits than its factorization.

6560606565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145791268 (or 145791265 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The square root of 6560606565 is about 80997.5713524795. The cubic root of 6560606565 is about 1872.0380198899.

The spelling of 6560606565 in words is "six billion, five hundred sixty million, six hundred six thousand, five hundred sixty-five".