561065 has 4 divisors (see below), whose sum is σ = 673284. Its totient is φ = 448848.

The previous prime is 561061. The next prime is 561079. The reversal of 561065 is 560165.

561065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196249 + 364816 = 443^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 561065 - 2² = 561061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 561065.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 561065.

It is not an unprimeable number, because it can be changed into a prime (561061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56102 + ... + 56111.

It is an arithmetic number, because the mean of its divisors is an integer number (168321).

2⁵⁶¹⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

561065 is a deficient number, since it is larger than the sum of its proper divisors (112219).

561065 is a wasteful number, since it uses less digits than its factorization.

561065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112218.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 561065 is about 749.0427224131. The cubic root of 561065 is about 82.4779249171.

Subtracting from 561065 its reverse (560165), we obtain a square (900 = 30²).

The spelling of 561065 in words is "five hundred sixty-one thousand, sixty-five".