561760 has 24 divisors (see below), whose sum is σ = 1327536. Its totient is φ = 224640.

The previous prime is 561733. The next prime is 561761. The reversal of 561760 is 67165.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561761) by changing a digit.

561760 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1596 + ... + 1915.

It is an arithmetic number, because the mean of its divisors is an integer number (55314).

2⁵⁶¹⁷⁶⁰ is an apocalyptic number.

It is an amenable number.

561760 is an abundant number, since it is smaller than the sum of its proper divisors (765776).

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

561760 is a wasteful number, since it uses less digits than its factorization.

561760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526 (or 3518 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 561760 is about 749.5065043080. The cubic root of 561760 is about 82.5119664307.

The spelling of 561760 in words is "five hundred sixty-one thousand, seven hundred sixty".