853864 has 32 divisors (see below), whose sum is σ = 1808640. Its totient is φ = 374400.

The previous prime is 853843. The next prime is 853873. The reversal of 853864 is 468358.

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, 2572 + ... + 2884.

It is an arithmetic number, because the mean of its divisors is an integer number (56520).

2⁸⁵³⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 853864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (904320).

853864 is an abundant number, since it is smaller than the sum of its proper divisors (954776).

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

853864 is a wasteful number, since it uses less digits than its factorization.

853864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 357 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 853864 is about 924.0476178206. The cubic root of 853864 is about 94.8701457612.

The spelling of 853864 in words is "eight hundred fifty-three thousand, eight hundred sixty-four".