6872621056 has 56 divisors (see below), whose sum is σ = 15708020400. Its totient is φ = 2945384448.

The previous prime is 6872621047. The next prime is 6872621083. The reversal of 6872621056 is 6501262786.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2581 + ... + 117268.

Almost surely, 2^6872621056 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 6872621056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7854010200).

6872621056 is an abundant number, since it is smaller than the sum of its proper divisors (8835399344).

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

6872621056 is an equidigital number, since it uses as much as digits as its factorization.

6872621056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119882 (or 119858 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 6872621056 is about 82901.2729455947. The cubic root of 6872621056 is about 1901.2568836014.

The spelling of 6872621056 in words is "six billion, eight hundred seventy-two million, six hundred twenty-one thousand, fifty-six".