6665078080 has 56 divisors (see below), whose sum is σ = 16258352040. Its totient is φ = 2601000960.

The previous prime is 6665078053. The next prime is 6665078087. The reversal of 6665078080 is 808705666.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 111851776 + 6553226304 = 10576^2 + 80952^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6665078080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665078087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240885 + ... + 267124.

It is an arithmetic number, because the mean of its divisors is an integer number (290327715).

Almost surely, 2^6665078080 is an apocalyptic number.

It is an amenable number.

6665078080 is an abundant number, since it is smaller than the sum of its proper divisors (9593273960).

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

6665078080 is a wasteful number, since it uses less digits than its factorization.

6665078080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508067 (or 508057 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 6665078080 is about 81639.9294463193. The cubic root of 6665078080 is about 1881.9225541576.

The spelling of 6665078080 in words is "six billion, six hundred sixty-five million, seventy-eight thousand, eighty".