6813147 has 18 divisors (see below), whose sum is σ = 10058524. Its totient is φ = 4099040.

The previous prime is 6813139. The next prime is 6813181. The reversal of 6813147 is 7413186.

It is a happy number.

It is not a de Polignac number, because 6813147 - 2³ = 6813139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6813127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49663 + ... + 49799.

Almost surely, 2^6813147 is an apocalyptic number.

6813147 is a deficient number, since it is larger than the sum of its proper divisors (3245377).

6813147 is a wasteful number, since it uses less digits than its factorization.

6813147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 151 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 6813147 is about 2610.2005670063. The cubic root of 6813147 is about 189.5756642821.

It can be divided in two parts, 681 and 3147, that added together give a triangular number (3828 = T₈₇).

The spelling of 6813147 in words is "six million, eight hundred thirteen thousand, one hundred forty-seven".