6785813 has 4 divisors (see below), whose sum is σ = 6930240. Its totient is φ = 6641388.

The previous prime is 6785791. The next prime is 6785843. The reversal of 6785813 is 3185876.

6785813 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 6785813 - 2⁸ = 6785557 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 (6785843) 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, 72143 + ... + 72236.

It is an arithmetic number, because the mean of its divisors is an integer number (1732560).

Almost surely, 2^6785813 is an apocalyptic number.

It is an amenable number.

6785813 is a deficient number, since it is larger than the sum of its proper divisors (144427).

6785813 is a wasteful number, since it uses less digits than its factorization.

6785813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144426.

The product of its digits is 40320, while the sum is 38.

The square root of 6785813 is about 2604.9593087033. The cubic root of 6785813 is about 189.3218018363.

The spelling of 6785813 in words is "six million, seven hundred eighty-five thousand, eight hundred thirteen".