260845 has 8 divisors (see below), whose sum is σ = 337176. Its totient is φ = 192576.

The previous prime is 260809. The next prime is 260849. The reversal of 260845 is 548062.

It can be written as a sum of positive squares in 4 ways, for example, as 24649 + 236196 = 157^2 + 486^2 .

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 260845 - 2⁷ = 260717 is a prime.

It is a super-2 number, since 2×260845² = 136080228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260849) 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, 1942 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (42147).

2²⁶⁰⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

260845 is a deficient number, since it is larger than the sum of its proper divisors (76331).

260845 is a wasteful number, since it uses less digits than its factorization.

260845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 260845 is about 510.7298698921. The cubic root of 260845 is about 63.8941120143.

The spelling of 260845 in words is "two hundred sixty thousand, eight hundred forty-five".