6813818 has 16 divisors (see below), whose sum is σ = 11737440. Its totient is φ = 2934000.

The previous prime is 6813817. The next prime is 6813847. The reversal of 6813818 is 8183186.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6813817) 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, 7733 + ... + 8568.

It is an arithmetic number, because the mean of its divisors is an integer number (733590).

Almost surely, 2^6813818 is an apocalyptic number.

6813818 is a deficient number, since it is larger than the sum of its proper divisors (4923622).

6813818 is a wasteful number, since it uses less digits than its factorization.

6813818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16333.

The product of its digits is 9216, while the sum is 35.

The square root of 6813818 is about 2610.3290980258. The cubic root of 6813818 is about 189.5818875978.

The spelling of 6813818 in words is "six million, eight hundred thirteen thousand, eight hundred eighteen".