6851109 has 4 divisors (see below), whose sum is σ = 9134816. Its totient is φ = 4567404.

The previous prime is 6851107. The next prime is 6851111. The reversal of 6851109 is 9011586.

It is a happy number.

6851109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6851107) and next prime (6851111).

It is not a de Polignac number, because 6851109 - 2¹ = 6851107 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6851101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141849 + ... + 1141854.

It is an arithmetic number, because the mean of its divisors is an integer number (2283704).

Almost surely, 2^6851109 is an apocalyptic number.

It is an amenable number.

6851109 is a deficient number, since it is larger than the sum of its proper divisors (2283707).

6851109 is a wasteful number, since it uses less digits than its factorization.

6851109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283706.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 6851109 is about 2617.4623206457. The cubic root of 6851109 is about 189.9271096212.

The spelling of 6851109 in words is "six million, eight hundred fifty-one thousand, one hundred nine".