6845107817 has 8 divisors (see below), whose sum is σ = 7277839272. Its totient is φ = 6415718400.

The previous prime is 6845107813. The next prime is 6845107837. The reversal of 6845107817 is 7187015486.

It can be written as a sum of positive squares in 4 ways, for example, as 937033321 + 5908074496 = 30611^2 + 76864^2 .

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

It is not a de Polignac number, because 6845107817 - 2² = 6845107813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6845107813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831284 + ... + 839477.

It is an arithmetic number, because the mean of its divisors is an integer number (909729909).

Almost surely, 2^6845107817 is an apocalyptic number.

It is an amenable number.

6845107817 is a deficient number, since it is larger than the sum of its proper divisors (432731455).

6845107817 is a wasteful number, since it uses less digits than its factorization.

6845107817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671019.

The product of its (nonzero) digits is 376320, while the sum is 47.

The square root of 6845107817 is about 82735.1667490916. The cubic root of 6845107817 is about 1898.7163829530.

The spelling of 6845107817 in words is "six billion, eight hundred forty-five million, one hundred seven thousand, eight hundred seventeen".