6566561562 has 32 divisors (see below), whose sum is σ = 14660236800. Its totient is φ = 1943590320.

The previous prime is 6566561539. The next prime is 6566561579. The reversal of 6566561562 is 2651656656.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1154062 + ... + 1159737.

It is an arithmetic number, because the mean of its divisors is an integer number (458132400).

Almost surely, 2^6566561562 is an apocalyptic number.

6566561562 is an abundant number, since it is smaller than the sum of its proper divisors (8093675238).

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

6566561562 is a wasteful number, since it uses less digits than its factorization.

6566561562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313858.

The product of its digits is 1944000, while the sum is 48.

The square root of 6566561562 is about 81034.3233574514. The cubic root of 6566561562 is about 1872.6042586674.

The spelling of 6566561562 in words is "six billion, five hundred sixty-six million, five hundred sixty-one thousand, five hundred sixty-two".