6560660563 has 4 divisors (see below), whose sum is σ = 6560895040. Its totient is φ = 6560426088.

The previous prime is 6560660539. The next prime is 6560660567. The reversal of 6560660563 is 3650660656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6560660563 - 2⁵ = 6560660531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6560660567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68520 + ... + 133477.

It is an arithmetic number, because the mean of its divisors is an integer number (1640223760).

Almost surely, 2^6560660563 is an apocalyptic number.

6560660563 is a deficient number, since it is larger than the sum of its proper divisors (234477).

6560660563 is a wasteful number, since it uses less digits than its factorization.

6560660563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234476.

The product of its (nonzero) digits is 583200, while the sum is 43.

The square root of 6560660563 is about 80997.9046827756. The cubic root of 6560660563 is about 1872.0431559004.

The spelling of 6560660563 in words is "six billion, five hundred sixty million, six hundred sixty thousand, five hundred sixty-three".