561694584 has 96 divisors (see below), whose sum is σ = 1556674560. Its totient is φ = 168759360.

The previous prime is 561694571. The next prime is 561694589. The reversal of 561694584 is 485496165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561694589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 368047 + ... + 369569.

It is an arithmetic number, because the mean of its divisors is an integer number (16215360).

Almost surely, 2^561694584 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561694584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778337280).

561694584 is an abundant number, since it is smaller than the sum of its proper divisors (994979976).

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

561694584 is a wasteful number, since it uses less digits than its factorization.

561694584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681 (or 1666 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The square root of 561694584 is about 23700.0967086634. The cubic root of 561694584 is about 825.0876351351.

The spelling of 561694584 in words is "five hundred sixty-one million, six hundred ninety-four thousand, five hundred eighty-four".