561734016 has 64 divisors (see below), whose sum is σ = 1499808000. Its totient is φ = 186278400.

The previous prime is 561734011. The next prime is 561734029. The reversal of 561734016 is 610437165.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561734011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72741 + ... + 80091.

It is an arithmetic number, because the mean of its divisors is an integer number (23434500).

Almost surely, 2^561734016 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 561734016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749904000).

561734016 is an abundant number, since it is smaller than the sum of its proper divisors (938073984).

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

561734016 is a wasteful number, since it uses less digits than its factorization.

561734016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567 (or 7555 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 561734016 is about 23700.9285894034. The cubic root of 561734016 is about 825.1069422433.

The spelling of 561734016 in words is "five hundred sixty-one million, seven hundred thirty-four thousand, sixteen".