6816836 has 24 divisors (see below), whose sum is σ = 12918360. Its totient is φ = 3128832.

The previous prime is 6816829. The next prime is 6816841. The reversal of 6816836 is 6386186.

It can be written as a sum of positive squares in 4 ways, for example, as 25600 + 6791236 = 160^2 + 2606^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6816836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17330 + ... + 17718.

It is an arithmetic number, because the mean of its divisors is an integer number (538265).

Almost surely, 2^6816836 is an apocalyptic number.

It is an amenable number.

6816836 is a deficient number, since it is larger than the sum of its proper divisors (6101524).

6816836 is a wasteful number, since it uses less digits than its factorization.

6816836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 741 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 6816836 is about 2610.9071220555. The cubic root of 6816836 is about 189.6098735563.

The spelling of 6816836 in words is "six million, eight hundred sixteen thousand, eight hundred thirty-six".