6851172685 has 8 divisors (see below), whose sum is σ = 9395894016. Its totient is φ = 4697946960.

The previous prime is 6851172683. The next prime is 6851172709. The reversal of 6851172685 is 5862711586.

6851172685 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6851172685 - 2¹ = 6851172683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6851172683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97873861 + ... + 97873930.

It is an arithmetic number, because the mean of its divisors is an integer number (1174486752).

Almost surely, 2^6851172685 is an apocalyptic number.

It is an amenable number.

6851172685 is a deficient number, since it is larger than the sum of its proper divisors (2544721331).

6851172685 is a wasteful number, since it uses less digits than its factorization.

6851172685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195747803.

The product of its digits is 806400, while the sum is 49.

The square root of 6851172685 is about 82771.8109322250. The cubic root of 6851172685 is about 1899.2769811327.

The spelling of 6851172685 in words is "six billion, eight hundred fifty-one million, one hundred seventy-two thousand, six hundred eighty-five".