6564224656 has 40 divisors (see below), whose sum is σ = 14477626944. Its totient is φ = 2854008960.

The previous prime is 6564224647. The next prime is 6564224659.

6564224656 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (6564224659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806751 + ... + 814846.

Almost surely, 2^6564224656 is an apocalyptic number.

It is an amenable number.

6564224656 is an abundant number, since it is smaller than the sum of its proper divisors (7913402288).

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

6564224656 is a wasteful number, since it uses less digits than its factorization.

6564224656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621639 (or 1621633 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 46.

The square root of 6564224656 is about 81019.9028387470. The cubic root of 6564224656 is about 1872.3820916925.

The spelling of 6564224656 in words is "six billion, five hundred sixty-four million, two hundred twenty-four thousand, six hundred fifty-six".