865271 has 6 divisors (see below), whose sum is σ = 951216. Its totient is φ = 786500.

The previous prime is 865261. The next prime is 865301. The reversal of 865271 is 172568.

It is a de Polignac number, because none of the positive numbers 2^k-865271 is a prime.

It is a pancake number, because a pancake can be divided into 865271 parts by 1315 straight cuts.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865201) 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, 3455 + ... + 3696.

It is an arithmetic number, because the mean of its divisors is an integer number (158536).

2⁸⁶⁵²⁷¹ is an apocalyptic number.

865271 is a deficient number, since it is larger than the sum of its proper divisors (85945).

865271 is a wasteful number, since it uses less digits than its factorization.

865271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7173 (or 7162 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 865271 is about 930.1994409803. The cubic root of 865271 is about 95.2907436322.

The spelling of 865271 in words is "eight hundred sixty-five thousand, two hundred seventy-one".