6815680404 has 48 divisors (see below), whose sum is σ = 17251647168. Its totient is φ = 2081818368.

The previous prime is 6815680363. The next prime is 6815680411. The reversal of 6815680404 is 4040865186.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 138082 + ... + 180825.

It is an arithmetic number, because the mean of its divisors is an integer number (359409316).

Almost surely, 2^6815680404 is an apocalyptic number.

It is an amenable number.

6815680404 is an abundant number, since it is smaller than the sum of its proper divisors (10435966764).

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

6815680404 is a wasteful number, since it uses less digits than its factorization.

6815680404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319064 (or 319062 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 6815680404 is about 82557.1341799120. The cubic root of 6815680404 is about 1895.9915867365.

The spelling of 6815680404 in words is "six billion, eight hundred fifteen million, six hundred eighty thousand, four hundred four".