265879 has 4 divisors (see below), whose sum is σ = 271584. Its totient is φ = 260176.

The previous prime is 265873. The next prime is 265883. The reversal of 265879 is 978562.

265879 = T₈₂ + T₈₃ + ... + T₁₂₈.

265879 = 208² + 209² + ... + 213².

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 265879 - 2³ = 265871 is a prime.

It is a d-powerful number, because it can be written as 2² + 6⁴ + 8⁶ + 5² + 7⁴ + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265871) 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, 2782 + ... + 2875.

It is an arithmetic number, because the mean of its divisors is an integer number (67896).

2²⁶⁵⁸⁷⁹ is an apocalyptic number.

265879 is a deficient number, since it is larger than the sum of its proper divisors (5705).

265879 is an equidigital number, since it uses as much as digits as its factorization.

265879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704.

The product of its digits is 30240, while the sum is 37.

The square root of 265879 is about 515.6345605174. The cubic root of 265879 is about 64.3025228240.

The spelling of 265879 in words is "two hundred sixty-five thousand, eight hundred seventy-nine".