260345289 has 4 divisors (see below), whose sum is σ = 347127056. Its totient is φ = 173563524.

The previous prime is 260345279. The next prime is 260345299. The reversal of 260345289 is 982543062.

It is a happy number.

260345289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (260345279) and next prime (260345299).

It is not a de Polignac number, because 260345289 - 2⁴ = 260345273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260345279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43390879 + ... + 43390884.

It is an arithmetic number, because the mean of its divisors is an integer number (86781764).

Almost surely, 2^260345289 is an apocalyptic number.

It is an amenable number.

260345289 is a deficient number, since it is larger than the sum of its proper divisors (86781767).

260345289 is an equidigital number, since it uses as much as digits as its factorization.

260345289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86781766.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 260345289 is about 16135.2189015210. The cubic root of 260345289 is about 638.5328444588.

The spelling of 260345289 in words is "two hundred sixty million, three hundred forty-five thousand, two hundred eighty-nine".