260565 has 16 divisors (see below), whose sum is σ = 432000. Its totient is φ = 133952.

The previous prime is 260551. The next prime is 260569. The reversal of 260565 is 565062.

It is a cyclic number.

It is not a de Polignac number, because 260565 - 2⁴ = 260549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136 + ... + 734.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2²⁶⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

260565 is a deficient number, since it is larger than the sum of its proper divisors (171435).

260565 is a wasteful number, since it uses less digits than its factorization.

260565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 260565 is about 510.4556787812. The cubic root of 260565 is about 63.8712417829.

The spelling of 260565 in words is "two hundred sixty thousand, five hundred sixty-five".