6868540 has 48 divisors (see below), whose sum is σ = 16740864. Its totient is φ = 2318400.

The previous prime is 6868531. The next prime is 6868549. The reversal of 6868540 is 458686.

It is an interprime number because it is at equal distance from previous prime (6868531) and next prime (6868549).

It is a self number, because there is not a number n which added to its sum of digits gives 6868540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868549) 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, 9595 + ... + 10285.

It is an arithmetic number, because the mean of its divisors is an integer number (348768).

Almost surely, 2^6868540 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 6868540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8370432).

6868540 is an abundant number, since it is smaller than the sum of its proper divisors (9872324).

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

6868540 is a wasteful number, since it uses less digits than its factorization.

6868540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 776 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 6868540 is about 2620.7899572457. The cubic root of 6868540 is about 190.0880478341.

The spelling of 6868540 in words is "six million, eight hundred sixty-eight thousand, five hundred forty".