864618 has 8 divisors (see below), whose sum is σ = 1729248. Its totient is φ = 288204.

The previous prime is 864613. The next prime is 864623. The reversal of 864618 is 816468.

864618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (864613) and next prime (864623).

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

864618 is an admirable number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864618.

It is not an unprimeable number, because it can be changed into a prime (864613) 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, 72046 + ... + 72057.

It is an arithmetic number, because the mean of its divisors is an integer number (216156).

2⁸⁶⁴⁶¹⁸ is an apocalyptic number.

864618 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.

864618 is a wasteful number, since it uses less digits than its factorization.

864618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144108.

The product of its digits is 9216, while the sum is 33.

The square root of 864618 is about 929.8483747364. The cubic root of 864618 is about 95.2667663598.

The spelling of 864618 in words is "eight hundred sixty-four thousand, six hundred eighteen".