6823839645 has 48 divisors (see below), whose sum is σ = 14229171840. Its totient is φ = 2955284352.

The previous prime is 6823839613. The next prime is 6823839647. The reversal of 6823839645 is 5469383286.

It is not a de Polignac number, because 6823839645 - 2⁵ = 6823839613 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6823839591 and 6823839600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6823839647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 564094 + ... + 576063.

It is an arithmetic number, because the mean of its divisors is an integer number (296441080).

Almost surely, 2^6823839645 is an apocalyptic number.

It is an amenable number.

6823839645 is an abundant number, since it is smaller than the sum of its proper divisors (7405332195).

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

6823839645 is a wasteful number, since it uses less digits than its factorization.

6823839645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140194 (or 1140191 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The square root of 6823839645 is about 82606.5351228340. The cubic root of 6823839645 is about 1896.7478664888.

The spelling of 6823839645 in words is "six billion, eight hundred twenty-three million, eight hundred thirty-nine thousand, six hundred forty-five".