811878 has 16 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 264776.

The previous prime is 811871. The next prime is 811879. The reversal of 811878 is 878118.

811878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158 + ... + 1721.

It is an arithmetic number, because the mean of its divisors is an integer number (103680).

2⁸¹¹⁸⁷⁸ is an apocalyptic number.

811878 is an abundant number, since it is smaller than the sum of its proper divisors (847002).

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

811878 is a wasteful number, since it uses less digits than its factorization.

811878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931.

The product of its digits is 3584, while the sum is 33.

The square root of 811878 is about 901.0427292865. The cubic root of 811878 is about 93.2889613346.

The spelling of 811878 in words is "eight hundred eleven thousand, eight hundred seventy-eight".