6861272680 has 64 divisors (see below), whose sum is σ = 15766490880. Its totient is φ = 2686521600.

The previous prime is 6861272659. The next prime is 6861272681. The reversal of 6861272680 is 862721686.

It is a self number, because there is not a number n which added to its sum of digits gives 6861272680.

It is not an unprimeable number, because it can be changed into a prime (6861272681) 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, 508177 + ... + 521503.

It is an arithmetic number, because the mean of its divisors is an integer number (246351420).

Almost surely, 2^6861272680 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 6861272680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7883245440).

6861272680 is an abundant number, since it is smaller than the sum of its proper divisors (8905218200).

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

6861272680 is a wasteful number, since it uses less digits than its factorization.

6861272680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13610 (or 13606 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 6861272680 is about 82832.7995422103. The cubic root of 6861272680 is about 1900.2098272423.

The spelling of 6861272680 in words is "six billion, eight hundred sixty-one million, two hundred seventy-two thousand, six hundred eighty".