6813129 has 16 divisors (see below), whose sum is σ = 9539712. Its totient is φ = 4316928.

The previous prime is 6813127. The next prime is 6813137. The reversal of 6813129 is 9213186.

It is not a de Polignac number, because 6813129 - 2¹ = 6813127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6813096 and 6813105.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20049 + ... + 20385.

It is an arithmetic number, because the mean of its divisors is an integer number (596232).

Almost surely, 2^6813129 is an apocalyptic number.

6813129 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

6813129 is a deficient number, since it is larger than the sum of its proper divisors (2726583).

6813129 is a wasteful number, since it uses less digits than its factorization.

6813129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656.

The product of its digits is 2592, while the sum is 30.

The square root of 6813129 is about 2610.1971189931. The cubic root of 6813129 is about 189.5754973321.

The spelling of 6813129 in words is "six million, eight hundred thirteen thousand, one hundred twenty-nine".