561968322 has 16 divisors (see below), whose sum is σ = 1162693440. Its totient is φ = 180863312.

The previous prime is 561968287. The next prime is 561968347. The reversal of 561968322 is 223869165.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1614678 + ... + 1615025.

It is an arithmetic number, because the mean of its divisors is an integer number (72668340).

Almost surely, 2^561968322 is an apocalyptic number.

561968322 is an abundant number, since it is smaller than the sum of its proper divisors (600725118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561968322 is a wasteful number, since it uses less digits than its factorization.

561968322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229737.

The product of its digits is 155520, while the sum is 42.

The square root of 561968322 is about 23705.8710449542. The cubic root of 561968322 is about 825.2216469661.

The spelling of 561968322 in words is "five hundred sixty-one million, nine hundred sixty-eight thousand, three hundred twenty-two".