864366 has 8 divisors (see below), whose sum is σ = 1728744. Its totient is φ = 288120.

The previous prime is 864361. The next prime is 864379. The reversal of 864366 is 663468.

864366 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.

864366 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864361) by changing a digit.

864366 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 3 ways as a sum of consecutive naturals, for example, 72025 + ... + 72036.

It is an arithmetic number, because the mean of its divisors is an integer number (216093).

2⁸⁶⁴³⁶⁶ is an apocalyptic number.

864366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

864366 is a wasteful number, since it uses less digits than its factorization.

864366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144066.

The product of its digits is 20736, while the sum is 33.

The square root of 864366 is about 929.7128588978. The cubic root of 864366 is about 95.2575100340.

The spelling of 864366 in words is "eight hundred sixty-four thousand, three hundred sixty-six".