865241 has 16 divisors (see below), whose sum is σ = 1021440. Its totient is φ = 725760.

The previous prime is 865231. The next prime is 865247. The reversal of 865241 is 142568.

It is a cyclic number.

It is not a de Polignac number, because 865241 - 2⁶ = 865177 is a prime.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 865241.

It is not an unprimeable number, because it can be changed into a prime (865247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7601 + ... + 7713.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2⁸⁶⁵²⁴¹ is an apocalyptic number.

It is an amenable number.

865241 is a deficient number, since it is larger than the sum of its proper divisors (156199).

865241 is a wasteful number, since it uses less digits than its factorization.

865241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176.

The product of its digits is 1920, while the sum is 26.

The square root of 865241 is about 930.1833152664. The cubic root of 865241 is about 95.2896423374.

The spelling of 865241 in words is "eight hundred sixty-five thousand, two hundred forty-one".