6563685823 has 2 divisors, whose sum is σ = 6563685824. Its totient is φ = 6563685822.

The previous prime is 6563685803. The next prime is 6563685829. The reversal of 6563685823 is 3285863656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6563685823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6563685829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3281842911 + 3281842912.

It is an arithmetic number, because the mean of its divisors is an integer number (3281842912).

Almost surely, 2^6563685823 is an apocalyptic number.

6563685823 is a deficient number, since it is larger than the sum of its proper divisors (1).

6563685823 is an equidigital number, since it uses as much as digits as its factorization.

6563685823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6220800, while the sum is 52.

The square root of 6563685823 is about 81016.5774579499. The cubic root of 6563685823 is about 1872.3308579765.

The spelling of 6563685823 in words is "six billion, five hundred sixty-three million, six hundred eighty-five thousand, eight hundred twenty-three".