561968323 has 16 divisors (see below), whose sum is σ = 649471680. Its totient is φ = 476292096.

The previous prime is 561968287. The next prime is 561968347. The reversal of 561968323 is 323869165.

It is not a de Polignac number, because 561968323 - 2⁹ = 561967811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561968323.

It is not an unprimeable number, because it can be changed into a prime (561960323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655311 + ... + 656167.

It is an arithmetic number, because the mean of its divisors is an integer number (40591980).

Almost surely, 2^561968323 is an apocalyptic number.

561968323 is a deficient number, since it is larger than the sum of its proper divisors (87503357).

561968323 is a wasteful number, since it uses less digits than its factorization.

561968323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its digits is 233280, while the sum is 43.

The square root of 561968323 is about 23705.8710660461. The cubic root of 561968323 is about 825.2216474556.

The spelling of 561968323 in words is "five hundred sixty-one million, nine hundred sixty-eight thousand, three hundred twenty-three".