6563223655 has 8 divisors (see below), whose sum is σ = 7882131600. Its totient is φ = 5246403456.

The previous prime is 6563223647. The next prime is 6563223671. The reversal of 6563223655 is 5563223656.

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

It is a cyclic number.

It is not a de Polignac number, because 6563223655 - 2³ = 6563223647 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 515010 + ... + 527599.

It is an arithmetic number, because the mean of its divisors is an integer number (985266450).

Almost surely, 2^6563223655 is an apocalyptic number.

6563223655 is a deficient number, since it is larger than the sum of its proper divisors (1318907945).

6563223655 is a wasteful number, since it uses less digits than its factorization.

6563223655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043873.

The product of its digits is 972000, while the sum is 43.

The square root of 6563223655 is about 81013.7251026022. The cubic root of 6563223655 is about 1872.2869115444.

Subtracting from 6563223655 its reverse (5563223656), we obtain a palindrome (999999999).

The spelling of 6563223655 in words is "six billion, five hundred sixty-three million, two hundred twenty-three thousand, six hundred fifty-five".