6563669663 has 4 divisors (see below), whose sum is σ = 6564787488. Its totient is φ = 6562551840.

The previous prime is 6563669653. The next prime is 6563669687. The reversal of 6563669663 is 3669663656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6563669663 - 2⁴ = 6563669647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6563669599 and 6563669608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6563669653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550058 + ... + 561863.

It is an arithmetic number, because the mean of its divisors is an integer number (1641196872).

Almost surely, 2^6563669663 is an apocalyptic number.

6563669663 is a deficient number, since it is larger than the sum of its proper divisors (1117825).

6563669663 is a wasteful number, since it uses less digits than its factorization.

6563669663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117824.

The product of its digits is 18895680, while the sum is 56.

The square root of 6563669663 is about 81016.4777252134. The cubic root of 6563669663 is about 1872.3293213962.

The spelling of 6563669663 in words is "six billion, five hundred sixty-three million, six hundred sixty-nine thousand, six hundred sixty-three".