6691804036 has 12 divisors (see below), whose sum is σ = 11756225628. Its totient is φ = 3332882432.

The previous prime is 6691804019. The next prime is 6691804039. The reversal of 6691804036 is 6304081966.

It can be written as a sum of positive squares in 2 ways, for example, as 6649423936 + 42380100 = 81544^2 + 6510^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6691803983 and 6691804001.

It is not an unprimeable number, because it can be changed into a prime (6691804039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3253741 + ... + 3255796.

It is an arithmetic number, because the mean of its divisors is an integer number (979685469).

Almost surely, 2^6691804036 is an apocalyptic number.

It is an amenable number.

6691804036 is a deficient number, since it is larger than the sum of its proper divisors (5064421592).

6691804036 is a wasteful number, since it uses less digits than its factorization.

6691804036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6509798 (or 6509796 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 6691804036 is about 81803.4475801601. The cubic root of 6691804036 is about 1884.4346078522.

The spelling of 6691804036 in words is "six billion, six hundred ninety-one million, eight hundred four thousand, thirty-six".