6564224655 has 48 divisors (see below), whose sum is σ = 11623772160. Its totient is φ = 3425840064.

The previous prime is 6564224647. The next prime is 6564224659. The reversal of 6564224655 is 5564224656.

6564224655 is a `hidden beast` number, since 6 + 564 + 2 + 24 + 65 + 5 = 666.

It is not a de Polignac number, because 6564224655 - 2³ = 6564224647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6564224655.

It is a congruent number.

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

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 586522 + ... + 597608.

It is an arithmetic number, because the mean of its divisors is an integer number (242161920).

Almost surely, 2^6564224655 is an apocalyptic number.

6564224655 is a deficient number, since it is larger than the sum of its proper divisors (5059547505).

6564224655 is a wasteful number, since it uses less digits than its factorization.

6564224655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11380 (or 11377 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 45.

The square root of 6564224655 is about 81019.9028325757. The cubic root of 6564224655 is about 1872.3820915975.

Subtracting from 6564224655 its reverse (5564224656), we obtain a palindrome (999999999).

The spelling of 6564224655 in words is "six billion, five hundred sixty-four million, two hundred twenty-four thousand, six hundred fifty-five".