561716580 has 96 divisors (see below), whose sum is σ = 1669248000. Its totient is φ = 140829568.

The previous prime is 561716579. The next prime is 561716587. The reversal of 561716580 is 85617165.

561716580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (561716587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77971 + ... + 84869.

It is an arithmetic number, because the mean of its divisors is an integer number (17388000).

Almost surely, 2^561716580 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 561716580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (834624000).

561716580 is an abundant number, since it is smaller than the sum of its proper divisors (1107531420).

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

561716580 is a wasteful number, since it uses less digits than its factorization.

561716580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 561716580 is about 23700.5607528598. The cubic root of 561716580 is about 825.0984051581.

The spelling of 561716580 in words is "five hundred sixty-one million, seven hundred sixteen thousand, five hundred eighty".