864894 has 16 divisors (see below), whose sum is σ = 1767168. Its totient is φ = 282072.

The previous prime is 864887. The next prime is 864901. The reversal of 864894 is 498468.

It is an interprime number because it is at equal distance from previous prime (864887) and next prime (864901).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252 + ... + 1815.

It is an arithmetic number, because the mean of its divisors is an integer number (110448).

2⁸⁶⁴⁸⁹⁴ is an apocalyptic number.

864894 is an abundant number, since it is smaller than the sum of its proper divisors (902274).

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

864894 is a wasteful number, since it uses less digits than its factorization.

864894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119.

The product of its digits is 55296, while the sum is 39.

The square root of 864894 is about 929.9967741880. The cubic root of 864894 is about 95.2769021771.

The spelling of 864894 in words is "eight hundred sixty-four thousand, eight hundred ninety-four".