6814813 has 4 divisors (see below), whose sum is σ = 6860700. Its totient is φ = 6768928.

The previous prime is 6814783. The next prime is 6814849. The reversal of 6814813 is 3184186.

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 1159929 + 5654884 = 1077^2 + 2378^2 .

It is a cyclic number.

It is not a de Polignac number, because 6814813 - 2¹³ = 6806621 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 (6814853) 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, 22720 + ... + 23017.

It is an arithmetic number, because the mean of its divisors is an integer number (1715175).

Almost surely, 2^6814813 is an apocalyptic number.

It is an amenable number.

6814813 is a deficient number, since it is larger than the sum of its proper divisors (45887).

6814813 is a wasteful number, since it uses less digits than its factorization.

6814813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45886.

The product of its digits is 4608, while the sum is 31.

The square root of 6814813 is about 2610.5196800637. The cubic root of 6814813 is about 189.5911151605.

Adding to 6814813 its reverse (3184186), we get a palindrome (9998999).

The spelling of 6814813 in words is "six million, eight hundred fourteen thousand, eight hundred thirteen".