265868 has 6 divisors (see below), whose sum is σ = 465276. Its totient is φ = 132932.

The previous prime is 265861. The next prime is 265871. The reversal of 265868 is 868562.

It is not an unprimeable number, because it can be changed into a prime (265861) by changing a digit.

265868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 33230 + ... + 33237.

It is an arithmetic number, because the mean of its divisors is an integer number (77546).

2²⁶⁵⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

265868 is a deficient number, since it is larger than the sum of its proper divisors (199408).

265868 is a wasteful number, since it uses less digits than its factorization.

265868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66471 (or 66469 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 265868 is about 515.6238939382. The cubic root of 265868 is about 64.3016360328.

The spelling of 265868 in words is "two hundred sixty-five thousand, eight hundred sixty-eight".