260505 has 24 divisors (see below), whose sum is σ = 516672. Its totient is φ = 118944.

The previous prime is 260489. The next prime is 260527. The reversal of 260505 is 505062.

It is not a de Polignac number, because 260505 - 2⁴ = 260489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99 + ... + 728.

It is an arithmetic number, because the mean of its divisors is an integer number (21528).

2²⁶⁰⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

260505 is a deficient number, since it is larger than the sum of its proper divisors (256167).

260505 is a wasteful number, since it uses less digits than its factorization.

260505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 260505 is about 510.3969043793. The cubic root of 260505 is about 63.8663388877.

Adding to 260505 its reverse (505062), we get a palindrome (765567).

The spelling of 260505 in words is "two hundred sixty thousand, five hundred five".