6807944721 has 8 divisors (see below), whose sum is σ = 9087271264. Its totient is φ = 4533624000.

The previous prime is 6807944719. The next prime is 6807944747. The reversal of 6807944721 is 1274497086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6807944721 - 2¹ = 6807944719 is a prime.

It is a super-2 number, since 2×6807944721² = 92696222648383535682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6807944761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248280 + ... + 1253721.

It is an arithmetic number, because the mean of its divisors is an integer number (1135908908).

Almost surely, 2^6807944721 is an apocalyptic number.

It is an amenable number.

6807944721 is a deficient number, since it is larger than the sum of its proper divisors (2279326543).

6807944721 is a wasteful number, since it uses less digits than its factorization.

6807944721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502911.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 6807944721 is about 82510.2703970845. The cubic root of 6807944721 is about 1895.2740089663.

The spelling of 6807944721 in words is "six billion, eight hundred seven million, nine hundred forty-four thousand, seven hundred twenty-one".