6800813 has 4 divisors (see below), whose sum is σ = 6864480. Its totient is φ = 6737148.

The previous prime is 6800809. The next prime is 6800821. The reversal of 6800813 is 3180086.

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 not a de Polignac number, because 6800813 - 2² = 6800809 is a prime.

It is a Duffinian number.

6800813 is a modest number, since divided by 813 gives 68 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6800113) 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, 31673 + ... + 31886.

It is an arithmetic number, because the mean of its divisors is an integer number (1716120).

Almost surely, 2^6800813 is an apocalyptic number.

It is an amenable number.

6800813 is a deficient number, since it is larger than the sum of its proper divisors (63667).

6800813 is a wasteful number, since it uses less digits than its factorization.

6800813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63666.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 6800813 is about 2607.8368430559. The cubic root of 6800813 is about 189.4611974214.

Adding to 6800813 its reverse (3180086), we get a palindrome (9980899).

The spelling of 6800813 in words is "six million, eight hundred thousand, eight hundred thirteen".