260566 has 8 divisors (see below), whose sum is σ = 411480. Its totient is φ = 123408.

The previous prime is 260551. The next prime is 260569. The reversal of 260566 is 665062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 260566.

It is a congruent number.

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

260566 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 3391 + ... + 3466.

It is an arithmetic number, because the mean of its divisors is an integer number (51435).

2²⁶⁰⁵⁶⁶ is an apocalyptic number.

260566 is a deficient number, since it is larger than the sum of its proper divisors (150914).

260566 is a wasteful number, since it uses less digits than its factorization.

260566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 260566 is about 510.4566582973. The cubic root of 260566 is about 63.8713234915.

Subtracting 260566 from its reverse (665062), we obtain a square (404496 = 636²).

It can be divided in two parts, 26056 and 6, that added together give a palindrome (26062).

The spelling of 260566 in words is "two hundred sixty thousand, five hundred sixty-six".