564881923 has 16 divisors (see below), whose sum is σ = 601810560. Its totient is φ = 529200000.

The previous prime is 564881917. The next prime is 564881959. The reversal of 564881923 is 329188465.

It is a cyclic number.

It is not a de Polignac number, because 564881923 - 2¹³ = 564873731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (564881963) 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 15 ways as a sum of consecutive naturals, for example, 751798 + ... + 752548.

It is an arithmetic number, because the mean of its divisors is an integer number (37613160).

Almost surely, 2^564881923 is an apocalyptic number.

564881923 is a deficient number, since it is larger than the sum of its proper divisors (36928637).

564881923 is a wasteful number, since it uses less digits than its factorization.

564881923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its digits is 414720, while the sum is 46.

The square root of 564881923 is about 23767.2447498653. The cubic root of 564881923 is about 826.6453471963.

It can be divided in two parts, 5648 and 81923, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 564881923 in words is "five hundred sixty-four million, eight hundred eighty-one thousand, nine hundred twenty-three".