6878742 has 32 divisors (see below), whose sum is σ = 15331680. Its totient is φ = 2042880.

The previous prime is 6878737. The next prime is 6878743. The reversal of 6878742 is 2478786.

It is a junction number, because it is equal to n+sod(n) for n = 6878694 and 6878703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6878743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742 + ... + 3782.

It is an arithmetic number, because the mean of its divisors is an integer number (479115).

Almost surely, 2^6878742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6878742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7665840).

6878742 is an abundant number, since it is smaller than the sum of its proper divisors (8452938).

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

6878742 is a wasteful number, since it uses less digits than its factorization.

6878742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088.

The product of its digits is 150528, while the sum is 42.

The square root of 6878742 is about 2622.7355947560. The cubic root of 6878742 is about 190.1821153217.

The spelling of 6878742 in words is "six million, eight hundred seventy-eight thousand, seven hundred forty-two".