561341760 has 224 divisors, whose sum is σ = 2059180032. Its totient is φ = 126904320.

The previous prime is 561341741. The next prime is 561341761. The reversal of 561341760 is 67143165.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561341761) 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, 691755 + ... + 692565.

It is an arithmetic number, because the mean of its divisors is an integer number (9192768).

Almost surely, 2^561341760 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 561341760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1029590016).

561341760 is an abundant number, since it is smaller than the sum of its proper divisors (1497838272).

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

561341760 is a wasteful number, since it uses less digits than its factorization.

561341760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 931 counting only the distinct ones).

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

The square root of 561341760 is about 23692.6520254698. The cubic root of 561341760 is about 824.9148415314.

The spelling of 561341760 in words is "five hundred sixty-one million, three hundred forty-one thousand, seven hundred sixty".