6978860 has 48 divisors (see below), whose sum is σ = 16988160. Its totient is φ = 2358720.

The previous prime is 6978841. The next prime is 6978869. The reversal of 6978860 is 688796.

6978860 is digitally balanced in base 5, 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 (6978869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10745 + ... + 11375.

It is an arithmetic number, because the mean of its divisors is an integer number (353920).

Almost surely, 2^6978860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6978860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8494080).

6978860 is an abundant number, since it is smaller than the sum of its proper divisors (10009300).

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

6978860 is a wasteful number, since it uses less digits than its factorization.

6978860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 6978860 is about 2641.7532057329. The cubic root of 6978860 is about 191.1003556934.

Subtracting from 6978860 its reverse (688796), we obtain a square (6290064 = 2508²).

The spelling of 6978860 in words is "six million, nine hundred seventy-eight thousand, eight hundred sixty".