6666804072 has 48 divisors (see below), whose sum is σ = 18146700000. Its totient is φ = 2211096096.

The previous prime is 6666804043. The next prime is 6666804091. The reversal of 6666804072 is 2704086666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218322 + ... + 246977.

It is an arithmetic number, because the mean of its divisors is an integer number (378056250).

Almost surely, 2^6666804072 is an apocalyptic number.

It is an amenable number.

6666804072 is an abundant number, since it is smaller than the sum of its proper divisors (11479895928).

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

6666804072 is a wasteful number, since it uses less digits than its factorization.

6666804072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465510 (or 465503 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 6666804072 is about 81650.4995208235. The cubic root of 6666804072 is about 1882.0849880101.

The spelling of 6666804072 in words is "six billion, six hundred sixty-six million, eight hundred four thousand, seventy-two".