6804846821 has 8 divisors (see below), whose sum is σ = 6884357400. Its totient is φ = 6725574400.

The previous prime is 6804846809. The next prime is 6804846847. The reversal of 6804846821 is 1286484086.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3094696900 + 3710149921 = 55630^2 + 60911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6804846821 - 2⁶ = 6804846757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6804846121) 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, 1736 + ... + 116673.

It is an arithmetic number, because the mean of its divisors is an integer number (860544675).

Almost surely, 2^6804846821 is an apocalyptic number.

It is an amenable number.

6804846821 is a deficient number, since it is larger than the sum of its proper divisors (79510579).

6804846821 is a wasteful number, since it uses less digits than its factorization.

6804846821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119079.

The product of its (nonzero) digits is 589824, while the sum is 47.

The square root of 6804846821 is about 82491.4954465004. The cubic root of 6804846821 is about 1894.9864889980.

The spelling of 6804846821 in words is "six billion, eight hundred four million, eight hundred forty-six thousand, eight hundred twenty-one".