6666947468 has 12 divisors (see below), whose sum is σ = 12281219160. Its totient is φ = 3158027712.

The previous prime is 6666947467. The next prime is 6666947471. The reversal of 6666947468 is 8647496666.

It is a super-2 number, since 2×6666947468² = 88896377082143222048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6666947468.

It is not an unprimeable number, because it can be changed into a prime (6666947461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43861421 + ... + 43861572.

It is an arithmetic number, because the mean of its divisors is an integer number (1023434930).

Almost surely, 2^6666947468 is an apocalyptic number.

It is an amenable number.

6666947468 is a deficient number, since it is larger than the sum of its proper divisors (5614271692).

6666947468 is a wasteful number, since it uses less digits than its factorization.

6666947468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87723016 (or 87723014 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 62.

The square root of 6666947468 is about 81651.3776246304. The cubic root of 6666947468 is about 1882.0984818082.

The spelling of 6666947468 in words is "six billion, six hundred sixty-six million, nine hundred forty-seven thousand, four hundred sixty-eight".