6818320 has 20 divisors (see below), whose sum is σ = 15852780. Its totient is φ = 2727296.

The previous prime is 6818303. The next prime is 6818333. The reversal of 6818320 is 238186.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 3549456 = 1808^2 + 1884^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42535 + ... + 42694.

It is an arithmetic number, because the mean of its divisors is an integer number (792639).

Almost surely, 2^6818320 is an apocalyptic number.

It is an amenable number.

6818320 is an abundant number, since it is smaller than the sum of its proper divisors (9034460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6818320 is a wasteful number, since it uses less digits than its factorization.

6818320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85242 (or 85236 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 6818320 is about 2611.1912990051. The cubic root of 6818320 is about 189.6236316809.

The spelling of 6818320 in words is "six million, eight hundred eighteen thousand, three hundred twenty".