866358 has 12 divisors (see below), whose sum is σ = 1877148. Its totient is φ = 288780.

The previous prime is 866353. The next prime is 866389. The reversal of 866358 is 853668.

866358 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 866358.

It is not an unprimeable number, because it can be changed into a prime (866353) by changing a digit.

866358 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24048 + ... + 24083.

It is an arithmetic number, because the mean of its divisors is an integer number (156429).

2⁸⁶⁶³⁵⁸ is an apocalyptic number.

866358 is an abundant number, since it is smaller than the sum of its proper divisors (1010790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866358 is a wasteful number, since it uses less digits than its factorization.

866358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48139 (or 48136 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 866358 is about 930.7835408944. The cubic root of 866358 is about 95.3306300547.

It can be divided in two parts, 8 and 66358, that added together give a palindrome (66366).

The spelling of 866358 in words is "eight hundred sixty-six thousand, three hundred fifty-eight".