6864109 has 4 divisors (see below), whose sum is σ = 7844704. Its totient is φ = 5883516.

The previous prime is 6864101. The next prime is 6864127. The reversal of 6864109 is 9014686.

6864109 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 a cyclic number.

It is not a de Polignac number, because 6864109 - 2³ = 6864101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6864101) 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, 490287 + ... + 490300.

It is an arithmetic number, because the mean of its divisors is an integer number (1961176).

Almost surely, 2^6864109 is an apocalyptic number.

It is an amenable number.

6864109 is a deficient number, since it is larger than the sum of its proper divisors (980595).

6864109 is an equidigital number, since it uses as much as digits as its factorization.

6864109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980594.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 6864109 is about 2619.9444650603. The cubic root of 6864109 is about 190.0471628073.

The spelling of 6864109 in words is "six million, eight hundred sixty-four thousand, one hundred nine".