563259961 has 24 divisors (see below), whose sum is σ = 634122720. Its totient is φ = 499783680.

The previous prime is 563259943. The next prime is 563259989. The reversal of 563259961 is 169952365.

It is not a de Polignac number, because 563259961 - 2²³ = 554871353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563259911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1834570 + ... + 1834876.

It is an arithmetic number, because the mean of its divisors is an integer number (26421780).

Almost surely, 2^563259961 is an apocalyptic number.

It is an amenable number.

563259961 is a deficient number, since it is larger than the sum of its proper divisors (70862759).

563259961 is a wasteful number, since it uses less digits than its factorization.

563259961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 634 counting only the distinct ones).

The product of its digits is 437400, while the sum is 46.

The square root of 563259961 is about 23733.0984281446. The cubic root of 563259961 is about 825.8533984028.

The spelling of 563259961 in words is "five hundred sixty-three million, two hundred fifty-nine thousand, nine hundred sixty-one".