260605 has 4 divisors (see below), whose sum is σ = 312732. Its totient is φ = 208480.

The previous prime is 260587. The next prime is 260609. The reversal of 260605 is 506062.

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 143641 + 116964 = 379^2 + 342^2 .

It is not a de Polignac number, because 260605 - 2⁵ = 260573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260609) 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, 26056 + ... + 26065.

It is an arithmetic number, because the mean of its divisors is an integer number (78183).

2²⁶⁰⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

260605 is a deficient number, since it is larger than the sum of its proper divisors (52127).

260605 is an equidigital number, since it uses as much as digits as its factorization.

260605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52126.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 260605 is about 510.4948579565. The cubic root of 260605 is about 63.8745099616.

Adding to 260605 its reverse (506062), we get a palindrome (766667).

The spelling of 260605 in words is "two hundred sixty thousand, six hundred five".