265878 has 12 divisors (see below), whose sum is σ = 576108. Its totient is φ = 88620.

The previous prime is 265873. The next prime is 265883. The reversal of 265878 is 878562.

It is an interprime number because it is at equal distance from previous prime (265873) and next prime (265883).

It is a super-2 number, since 2×265878² = 141382221768, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2² + 6⁴ + 8 + 5² + 7⁴ + 8⁶ .

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 5 ways as a sum of consecutive naturals, for example, 7368 + ... + 7403.

It is an arithmetic number, because the mean of its divisors is an integer number (48009).

2²⁶⁵⁸⁷⁸ is an apocalyptic number.

265878 is an abundant number, since it is smaller than the sum of its proper divisors (310230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265878 is a wasteful number, since it uses less digits than its factorization.

265878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14779 (or 14776 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 265878 is about 515.6335908375. The cubic root of 265878 is about 64.3024422077.

The spelling of 265878 in words is "two hundred sixty-five thousand, eight hundred seventy-eight".