6889878 has 48 divisors (see below), whose sum is σ = 15752880. Its totient is φ = 2173248.

The previous prime is 6889873. The next prime is 6889891. The reversal of 6889878 is 8789886.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6889873) 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, 34876 + ... + 35072.

It is an arithmetic number, because the mean of its divisors is an integer number (328185).

Almost surely, 2^6889878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6889878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7876440).

6889878 is an abundant number, since it is smaller than the sum of its proper divisors (8863002).

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

6889878 is a wasteful number, since it uses less digits than its factorization.

6889878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 298 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 6889878 is about 2624.8577104293. The cubic root of 6889878 is about 190.2846886406.

The spelling of 6889878 in words is "six million, eight hundred eighty-nine thousand, eight hundred seventy-eight".