265913 has 4 divisors (see below), whose sum is σ = 270480. Its totient is φ = 261348.

The previous prime is 265891. The next prime is 265921. The reversal of 265913 is 319562.

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 a cyclic number.

It is not a de Polignac number, because 265913 - 2¹⁰ = 264889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 265913.

It is not an unprimeable number, because it can be changed into a prime (265313) 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, 2195 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (67620).

2²⁶⁵⁹¹³ is an apocalyptic number.

It is an amenable number.

265913 is a deficient number, since it is larger than the sum of its proper divisors (4567).

265913 is an equidigital number, since it uses as much as digits as its factorization.

265913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566.

The product of its digits is 1620, while the sum is 26.

The square root of 265913 is about 515.6675285492. The cubic root of 265913 is about 64.3052636605.

The spelling of 265913 in words is "two hundred sixty-five thousand, nine hundred thirteen".