265887 has 12 divisors (see below), whose sum is σ = 396864. Its totient is φ = 171360.

The previous prime is 265883. The next prime is 265891. The reversal of 265887 is 788562.

It is an interprime number because it is at equal distance from previous prime (265883) and next prime (265891).

It is not a de Polignac number, because 265887 - 2² = 265883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198 + ... + 755.

It is an arithmetic number, because the mean of its divisors is an integer number (33072).

2²⁶⁵⁸⁸⁷ is an apocalyptic number.

265887 is a deficient number, since it is larger than the sum of its proper divisors (130977).

265887 is a wasteful number, since it uses less digits than its factorization.

265887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 987 counting only the distinct ones).

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

The square root of 265887 is about 515.6423178910. The cubic root of 265887 is about 64.3031677478.

The spelling of 265887 in words is "two hundred sixty-five thousand, eight hundred eighty-seven".