6816794609 has 4 divisors (see below), whose sum is σ = 6821956260. Its totient is φ = 6811632960.

The previous prime is 6816794599. The next prime is 6816794617. The reversal of 6816794609 is 9064976186.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4924109584 + 1892685025 = 70172^2 + 43505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6816794609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6816794629) 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, 2578844 + ... + 2581485.

It is an arithmetic number, because the mean of its divisors is an integer number (1705489065).

Almost surely, 2^6816794609 is an apocalyptic number.

It is an amenable number.

6816794609 is a deficient number, since it is larger than the sum of its proper divisors (5161651).

6816794609 is a wasteful number, since it uses less digits than its factorization.

6816794609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161650.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 6816794609 is about 82563.8819884337. The cubic root of 6816794609 is about 1896.0948979285.

The spelling of 6816794609 in words is "six billion, eight hundred sixteen million, seven hundred ninety-four thousand, six hundred nine".