260915 has 4 divisors (see below), whose sum is σ = 313104. Its totient is φ = 208728.

The previous prime is 260893. The next prime is 260921. The reversal of 260915 is 519062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519062 = 2 ⋅259531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260915 is a prime.

It is a Duffinian number.

It is an unprimeable 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, 26087 + ... + 26096.

It is an arithmetic number, because the mean of its divisors is an integer number (78276).

2²⁶⁰⁹¹⁵ is an apocalyptic number.

260915 is a deficient number, since it is larger than the sum of its proper divisors (52189).

260915 is an equidigital number, since it uses as much as digits as its factorization.

260915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52188.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 260915 is about 510.7983946725. The cubic root of 260915 is about 63.8998270147.

Adding to 260915 its reverse (519062), we get a palindrome (779977).

The spelling of 260915 in words is "two hundred sixty thousand, nine hundred fifteen".