865366 has 8 divisors (see below), whose sum is σ = 1314720. Its totient is φ = 427128.

The previous prime is 865363. The next prime is 865379. The reversal of 865366 is 663568.

865366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2581 + ... + 2896.

It is an arithmetic number, because the mean of its divisors is an integer number (164340).

2⁸⁶⁵³⁶⁶ is an apocalyptic number.

865366 is a deficient number, since it is larger than the sum of its proper divisors (449354).

865366 is a wasteful number, since it uses less digits than its factorization.

865366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558.

The product of its digits is 25920, while the sum is 34.

The square root of 865366 is about 930.2505038967. The cubic root of 865366 is about 95.2942308978.

The spelling of 865366 in words is "eight hundred sixty-five thousand, three hundred sixty-six".