6560651566 has 8 divisors (see below), whose sum is σ = 11246831280. Its totient is φ = 2811707808.

The previous prime is 6560651563. The next prime is 6560651579. The reversal of 6560651566 is 6651560656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6560651563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234308971 + ... + 234308998.

It is an arithmetic number, because the mean of its divisors is an integer number (1405853910).

Almost surely, 2^6560651566 is an apocalyptic number.

6560651566 is a deficient number, since it is larger than the sum of its proper divisors (4686179714).

6560651566 is a wasteful number, since it uses less digits than its factorization.

6560651566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468617978.

The product of its (nonzero) digits is 972000, while the sum is 46.

The square root of 6560651566 is about 80997.8491442828. The cubic root of 6560651566 is about 1872.0423001542.

The spelling of 6560651566 in words is "six billion, five hundred sixty million, six hundred fifty-one thousand, five hundred sixty-six".