561344206 has 4 divisors (see below), whose sum is σ = 842016312. Its totient is φ = 280672102.

The previous prime is 561344197. The next prime is 561344209. The reversal of 561344206 is 602443165.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561344209) 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 as a sum of consecutive naturals, namely, 140336050 + ... + 140336053.

It is an arithmetic number, because the mean of its divisors is an integer number (210504078).

Almost surely, 2^561344206 is an apocalyptic number.

561344206 is a deficient number, since it is larger than the sum of its proper divisors (280672106).

561344206 is a wasteful number, since it uses less digits than its factorization.

561344206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280672105.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 561344206 is about 23692.7036447933. The cubic root of 561344206 is about 824.9160396956.

The spelling of 561344206 in words is "five hundred sixty-one million, three hundred forty-four thousand, two hundred six".