6666930972 has 72 divisors (see below), whose sum is σ = 18937979424. Its totient is φ = 1962170496.

The previous prime is 6666930967. The next prime is 6666931043. The reversal of 6666930972 is 2790396666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298923 + ... + 320450.

It is an arithmetic number, because the mean of its divisors is an integer number (263027492).

Almost surely, 2^6666930972 is an apocalyptic number.

It is an amenable number.

6666930972 is an abundant number, since it is smaller than the sum of its proper divisors (12271048452).

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

6666930972 is a wasteful number, since it uses less digits than its factorization.

6666930972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619419 (or 619414 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 54.

The square root of 6666930972 is about 81651.2766097383. The cubic root of 6666930972 is about 1882.0969295175.

The spelling of 6666930972 in words is "six billion, six hundred sixty-six million, nine hundred thirty thousand, nine hundred seventy-two".