6868885140 has 432 divisors, whose sum is σ = 24348280320. Its totient is φ = 1556375040.

The previous prime is 6868885129. The next prime is 6868885147. The reversal of 6868885140 is 415888686.

6868885140 is a `hidden beast` number, since 68 + 68 + 8 + 8 + 514 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868885147) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 38373571 + ... + 38373749.

It is an arithmetic number, because the mean of its divisors is an integer number (56361760).

Almost surely, 2^6868885140 is an apocalyptic number.

6868885140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6868885140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12174140160).

6868885140 is an abundant number, since it is smaller than the sum of its proper divisors (17479395180).

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

6868885140 is a wasteful number, since it uses less digits than its factorization.

6868885140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 54.

The square root of 6868885140 is about 82878.7375627790. The cubic root of 6868885140 is about 1900.9123171747.

The spelling of 6868885140 in words is "six billion, eight hundred sixty-eight million, eight hundred eighty-five thousand, one hundred forty".