878878 has 32 divisors (see below), whose sum is σ = 1774080. Its totient is φ = 315360.

The previous prime is 878873. The next prime is 878893.

878878 is nontrivially palindromic in base 10.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878873) by changing a digit.

878878 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 15 ways as a sum of consecutive naturals, for example, 1783 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2⁸⁷⁸⁸⁷⁸ is an apocalyptic number.

878878 is an abundant number, since it is smaller than the sum of its proper divisors (895202).

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

878878 is a wasteful number, since it uses less digits than its factorization.

878878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its digits is 200704, while the sum is 46.

The square root of 878878 is about 937.4849332123. The cubic root of 878878 is about 95.7876527512.

The spelling of 878878 in words is "eight hundred seventy-eight thousand, eight hundred seventy-eight".