6563663656 has 32 divisors (see below), whose sum is σ = 13430059200. Its totient is φ = 2982509440.

The previous prime is 6563663627. The next prime is 6563663681.

6563663656 is nontrivially palindromic in base 10.

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, 305805 + ... + 326563.

It is an arithmetic number, because the mean of its divisors is an integer number (419689350).

Almost surely, 2^6563663656 is an apocalyptic number.

It is an amenable number.

6563663656 is an abundant number, since it is smaller than the sum of its proper divisors (6866395544).

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

6563663656 is a wasteful number, since it uses less digits than its factorization.

6563663656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24369 (or 24365 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 52.

The square root of 6563663656 is about 81016.4406524997. The cubic root of 6563663656 is about 1872.3287502174.

The spelling of 6563663656 in words is "six billion, five hundred sixty-three million, six hundred sixty-three thousand, six hundred fifty-six".