6808698613 has 4 divisors (see below), whose sum is σ = 6809074668. Its totient is φ = 6808322560.

The previous prime is 6808698607. The next prime is 6808698629. The reversal of 6808698613 is 3168968086.

It is a happy number.

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 938380689 + 5870317924 = 30633^2 + 76618^2 .

It is a cyclic number.

It is not a de Polignac number, because 6808698613 - 2⁵ = 6808698581 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 (6808698643) 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, 159418 + ... + 197563.

It is an arithmetic number, because the mean of its divisors is an integer number (1702268667).

Almost surely, 2^6808698613 is an apocalyptic number.

It is an amenable number.

6808698613 is a deficient number, since it is larger than the sum of its proper divisors (376055).

6808698613 is a wasteful number, since it uses less digits than its factorization.

6808698613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376054.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 6808698613 is about 82514.8387443131. The cubic root of 6808698613 is about 1895.3439654281.

The spelling of 6808698613 in words is "six billion, eight hundred eight million, six hundred ninety-eight thousand, six hundred thirteen".