265386 has 16 divisors (see below), whose sum is σ = 579168. Its totient is φ = 80400.

The previous prime is 265381. The next prime is 265399. The reversal of 265386 is 683562.

It is a d-powerful number, because it can be written as 2¹⁰ + 6³ + 3⁴ + 5⁴ + 8⁶ + 6⁴ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (265381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1945 + ... + 2076.

It is an arithmetic number, because the mean of its divisors is an integer number (36198).

2²⁶⁵³⁸⁶ is an apocalyptic number.

265386 is an abundant number, since it is smaller than the sum of its proper divisors (313782).

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

265386 is a wasteful number, since it uses less digits than its factorization.

265386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037.

The product of its digits is 8640, while the sum is 30.

The square root of 265386 is about 515.1562869654. The cubic root of 265386 is about 64.2627544110.

Subtracting from 265386 its sum of digits (30), we obtain a triangular number (265356 = T₇₂₈).

The spelling of 265386 in words is "two hundred sixty-five thousand, three hundred eighty-six".