864854 has 16 divisors (see below), whose sum is σ = 1360800. Its totient is φ = 411840.

The previous prime is 864817. The next prime is 864883. The reversal of 864854 is 458468.

864854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4247 + ... + 4445.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

2⁸⁶⁴⁸⁵⁴ is an apocalyptic number.

864854 is a deficient number, since it is larger than the sum of its proper divisors (495946).

864854 is a wasteful number, since it uses less digits than its factorization.

864854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295.

The product of its digits is 30720, while the sum is 35.

The square root of 864854 is about 929.9752684884. The cubic root of 864854 is about 95.2754333517.

The spelling of 864854 in words is "eight hundred sixty-four thousand, eight hundred fifty-four".