878823 has 24 divisors (see below), whose sum is σ = 1436400. Its totient is φ = 530640.

The previous prime is 878821. The next prime is 878831. The reversal of 878823 is 328878.

It is not a de Polignac number, because 878823 - 2¹ = 878821 is a prime.

878823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3133 + ... + 3401.

It is an arithmetic number, because the mean of its divisors is an integer number (59850).

2⁸⁷⁸⁸²³ is an apocalyptic number.

878823 is a deficient number, since it is larger than the sum of its proper divisors (557577).

878823 is a wasteful number, since it uses less digits than its factorization.

878823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 283 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 878823 is about 937.4555989486. The cubic root of 878823 is about 95.7856545858.

Subtracting from 878823 its reverse (328878), we obtain a palindrome (549945).

The spelling of 878823 in words is "eight hundred seventy-eight thousand, eight hundred twenty-three".