853878 has 16 divisors (see below), whose sum is σ = 1736496. Its totient is φ = 279840.

The previous prime is 853873. The next prime is 853889. The reversal of 853878 is 878358.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853873) by changing a digit.

853878 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801 + ... + 1532.

It is an arithmetic number, because the mean of its divisors is an integer number (108531).

2⁸⁵³⁸⁷⁸ is an apocalyptic number.

853878 is an abundant number, since it is smaller than the sum of its proper divisors (882618).

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

853878 is a wasteful number, since it uses less digits than its factorization.

853878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399.

The product of its digits is 53760, while the sum is 39.

The square root of 853878 is about 924.0551931568. The cubic root of 853878 is about 94.8706642570.

The spelling of 853878 in words is "eight hundred fifty-three thousand, eight hundred seventy-eight".