6806813613 has 16 divisors (see below), whose sum is σ = 9302373696. Its totient is φ = 4424918400.

The previous prime is 6806813599. The next prime is 6806813639. The reversal of 6806813613 is 3163186086.

It is not a de Polignac number, because 6806813613 - 2⁵ = 6806813581 is a prime.

It is a super-2 number, since 2×6806813613² = 92665423124244227538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6806813113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33631 + ... + 121427.

It is an arithmetic number, because the mean of its divisors is an integer number (581398356).

Almost surely, 2^6806813613 is an apocalyptic number.

It is an amenable number.

6806813613 is a deficient number, since it is larger than the sum of its proper divisors (2495560083).

6806813613 is a wasteful number, since it uses less digits than its factorization.

6806813613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88444.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 6806813613 is about 82503.4157656518. The cubic root of 6806813613 is about 1895.1690395314.

Adding to 6806813613 its reverse (3163186086), we get a palindrome (9969999699).

The spelling of 6806813613 in words is "six billion, eight hundred six million, eight hundred thirteen thousand, six hundred thirteen".