6563223656 has 32 divisors (see below), whose sum is σ = 14131346400. Its totient is φ = 2826267840.

The previous prime is 6563223647. The next prime is 6563223671.

6563223656 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1961015 + ... + 1964358.

It is an arithmetic number, because the mean of its divisors is an integer number (441604575).

Almost surely, 2^6563223656 is an apocalyptic number.

It is an amenable number.

6563223656 is an abundant number, since it is smaller than the sum of its proper divisors (7568122744).

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

6563223656 is a wasteful number, since it uses less digits than its factorization.

6563223656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925409 (or 3925405 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 44.

The square root of 6563223656 is about 81013.7251087740. The cubic root of 6563223656 is about 1872.2869116395.

The spelling of 6563223656 in words is "six billion, five hundred sixty-three million, two hundred twenty-three thousand, six hundred fifty-six".