6869840 has 40 divisors (see below), whose sum is σ = 16189440. Its totient is φ = 2710656.

The previous prime is 6869833. The next prime is 6869857. The reversal of 6869840 is 489686.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5777 + ... + 6863.

It is an arithmetic number, because the mean of its divisors is an integer number (404736).

Almost surely, 2^6869840 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 6869840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8094720).

6869840 is an abundant number, since it is smaller than the sum of its proper divisors (9319600).

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

6869840 is a wasteful number, since it uses less digits than its factorization.

6869840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 6869840 is about 2621.0379623348. The cubic root of 6869840 is about 190.1000396535.

The spelling of 6869840 in words is "six million, eight hundred sixty-nine thousand, eight hundred forty".