260005 has 8 divisors (see below), whose sum is σ = 315000. Its totient is φ = 206016.

The previous prime is 260003. The next prime is 260009. The reversal of 260005 is 500062.

It can be written as a sum of positive squares in 4 ways, for example, as 12996 + 247009 = 114^2 + 497^2 .

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 260005 - 2¹ = 260003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 571 + ... + 919.

It is an arithmetic number, because the mean of its divisors is an integer number (39375).

2²⁶⁰⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

260005 is a deficient number, since it is larger than the sum of its proper divisors (54995).

260005 is a wasteful number, since it uses less digits than its factorization.

260005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 260005 is about 509.9068542391. The cubic root of 260005 is about 63.8254521209.

Adding to 260005 its reverse (500062), we get a palindrome (760067).

The spelling of 260005 in words is "two hundred sixty thousand, five".