6820007445 has 24 divisors (see below), whose sum is σ = 12109675032. Its totient is φ = 3548620800.

The previous prime is 6820007417. The next prime is 6820007479. The reversal of 6820007445 is 5447000286.

6820007445 is a `hidden beast` number, since 6 + 8 + 200 + 0 + 7 + 445 = 666.

6820007445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 813447441 + 6006560004 = 28521^2 + 77502^2 .

It is not a de Polignac number, because 6820007445 - 2⁸ = 6820007189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1846396 + ... + 1850085.

It is an arithmetic number, because the mean of its divisors is an integer number (504569793).

Almost surely, 2^6820007445 is an apocalyptic number.

It is an amenable number.

6820007445 is a deficient number, since it is larger than the sum of its proper divisors (5289667587).

6820007445 is a wasteful number, since it uses less digits than its factorization.

6820007445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696533 (or 3696530 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 6820007445 is about 82583.3363639421. The cubic root of 6820007445 is about 1896.3927351328.

The spelling of 6820007445 in words is "six billion, eight hundred twenty million, seven thousand, four hundred forty-five".