6813133 has 4 divisors (see below), whose sum is σ = 6820828. Its totient is φ = 6805440.

The previous prime is 6813127. The next prime is 6813137. The reversal of 6813133 is 3313186.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3313186 = 2 ⋅1656593.

It can be written as a sum of positive squares in 2 ways, for example, as 1737124 + 5076009 = 1318^2 + 2253^2 .

It is a cyclic number.

It is not a de Polignac number, because 6813133 - 2⁵ = 6813101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6813098 and 6813107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813137) 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, 2316 + ... + 4357.

It is an arithmetic number, because the mean of its divisors is an integer number (1705207).

Almost surely, 2^6813133 is an apocalyptic number.

It is an amenable number.

6813133 is a deficient number, since it is larger than the sum of its proper divisors (7695).

6813133 is a wasteful number, since it uses less digits than its factorization.

6813133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7694.

The product of its digits is 1296, while the sum is 25.

The square root of 6813133 is about 2610.1978852187. The cubic root of 6813133 is about 189.5755344321.

The spelling of 6813133 in words is "six million, eight hundred thirteen thousand, one hundred thirty-three".