6813447 has 8 divisors (see below), whose sum is σ = 9619056. Its totient is φ = 4275072.

The previous prime is 6813409. The next prime is 6813473. The reversal of 6813447 is 7443186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6813447 - 2¹⁵ = 6780679 is a prime.

It is a d-powerful number, because it can be written as 6² + 8 + 1 + 3² + 4² + 4¹⁰ + 7⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66748 + ... + 66849.

It is an arithmetic number, because the mean of its divisors is an integer number (1202382).

Almost surely, 2^6813447 is an apocalyptic number.

6813447 is a deficient number, since it is larger than the sum of its proper divisors (2805609).

6813447 is a wasteful number, since it uses less digits than its factorization.

6813447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133617.

The product of its digits is 16128, while the sum is 33.

The square root of 6813447 is about 2610.2580332220. The cubic root of 6813447 is about 189.5784467390.

It can be divided in two parts, 6813 and 447, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 6813447 in words is "six million, eight hundred thirteen thousand, four hundred forty-seven".