6823886645 has 16 divisors (see below), whose sum is σ = 8235467328. Its totient is φ = 5427959040.

The previous prime is 6823886639. The next prime is 6823886647. The reversal of 6823886645 is 5466883286.

It is not a de Polignac number, because 6823886645 - 2²⁰ = 6822838069 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6823886647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1365842 + ... + 1370828.

It is an arithmetic number, because the mean of its divisors is an integer number (514716708).

Almost surely, 2^6823886645 is an apocalyptic number.

It is an amenable number.

6823886645 is a deficient number, since it is larger than the sum of its proper divisors (1411580683).

6823886645 is a wasteful number, since it uses less digits than its factorization.

6823886645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6500.

The product of its digits is 13271040, while the sum is 56.

The square root of 6823886645 is about 82606.8196034686. The cubic root of 6823886645 is about 1896.7522211703.

The spelling of 6823886645 in words is "six billion, eight hundred twenty-three million, eight hundred eighty-six thousand, six hundred forty-five".