563965871 has 24 divisors (see below), whose sum is σ = 708359520. Its totient is φ = 439229952.

The previous prime is 563965849. The next prime is 563965903. The reversal of 563965871 is 178569365.

It is a happy number.

It is not a de Polignac number, because 563965871 - 2¹⁴ = 563949487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563965811) 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 23 ways as a sum of consecutive naturals, for example, 53861 + ... + 63473.

It is an arithmetic number, because the mean of its divisors is an integer number (29514980).

Almost surely, 2^563965871 is an apocalyptic number.

563965871 is a deficient number, since it is larger than the sum of its proper divisors (144393649).

563965871 is a wasteful number, since it uses less digits than its factorization.

563965871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9683 (or 9666 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 50.

The square root of 563965871 is about 23747.9656181324. The cubic root of 563965871 is about 826.1982568113.

The spelling of 563965871 in words is "five hundred sixty-three million, nine hundred sixty-five thousand, eight hundred seventy-one".