6786712813 has 2 divisors, whose sum is σ = 6786712814. Its totient is φ = 6786712812.

The previous prime is 6786712799. The next prime is 6786712819. The reversal of 6786712813 is 3182176876.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3973789444 + 2812923369 = 63038^2 + 53037^2 .

It is a cyclic number.

It is not a de Polignac number, because 6786712813 - 2⁹ = 6786712301 is a prime.

It is a super-2 number, since 2×6786712813² = 92118941612276745938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6786712819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3393356406 + 3393356407.

It is an arithmetic number, because the mean of its divisors is an integer number (3393356407).

Almost surely, 2^6786712813 is an apocalyptic number.

It is an amenable number.

6786712813 is a deficient number, since it is larger than the sum of its proper divisors (1).

6786712813 is an equidigital number, since it uses as much as digits as its factorization.

6786712813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 49.

The square root of 6786712813 is about 82381.5077125929. The cubic root of 6786712813 is about 1893.3016962212.

The spelling of 6786712813 in words is "six billion, seven hundred eighty-six million, seven hundred twelve thousand, eight hundred thirteen".