260805 has 8 divisors (see below), whose sum is σ = 417312. Its totient is φ = 139088.

The previous prime is 260791. The next prime is 260807. The reversal of 260805 is 508062.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 260805 - 2⁵ = 260773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8679 + ... + 8708.

It is an arithmetic number, because the mean of its divisors is an integer number (52164).

2²⁶⁰⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

260805 is a deficient number, since it is larger than the sum of its proper divisors (156507).

260805 is a wasteful number, since it uses less digits than its factorization.

260805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17395.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 260805 is about 510.6907087465. The cubic root of 260805 is about 63.8908458408.

Adding to 260805 its reverse (508062), we get a palindrome (768867).

The spelling of 260805 in words is "two hundred sixty thousand, eight hundred five".