561596916 has 24 divisors (see below), whose sum is σ = 1311176160. Its totient is φ = 187087072.

The previous prime is 561596897. The next prime is 561596939. The reversal of 561596916 is 619695165.

561596916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×561596916² = 630782192121422112, which contains 22 as substring.

It is a congruent 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, 8350 + ... + 34538.

It is an arithmetic number, because the mean of its divisors is an integer number (54632340).

Almost surely, 2^561596916 is an apocalyptic number.

It is an amenable number.

561596916 is an abundant number, since it is smaller than the sum of its proper divisors (749579244).

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

561596916 is a wasteful number, since it uses less digits than its factorization.

561596916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27983 (or 27981 counting only the distinct ones).

The product of its digits is 437400, while the sum is 48.

The square root of 561596916 is about 23698.0361211641. The cubic root of 561596916 is about 825.0398100165.

The spelling of 561596916 in words is "five hundred sixty-one million, five hundred ninety-six thousand, nine hundred sixteen".