260815 has 4 divisors (see below), whose sum is σ = 312984. Its totient is φ = 208648.

The previous prime is 260809. The next prime is 260849. The reversal of 260815 is 518062.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 260815 - 2³ = 260807 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26077 + ... + 26086.

It is an arithmetic number, because the mean of its divisors is an integer number (78246).

2²⁶⁰⁸¹⁵ is an apocalyptic number.

260815 is a deficient number, since it is larger than the sum of its proper divisors (52169).

260815 is an equidigital number, since it uses as much as digits as its factorization.

260815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52168.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 260815 is about 510.7004993144. The cubic root of 260815 is about 63.8916624155.

Adding to 260815 its reverse (518062), we get a palindrome (778877).

The spelling of 260815 in words is "two hundred sixty thousand, eight hundred fifteen".