6666660064 has 24 divisors (see below), whose sum is σ = 13126925448. Its totient is φ = 3332837760.

The previous prime is 6666660061. The next prime is 6666660107. The reversal of 6666660064 is 4600666666.

It is a junction number, because it is equal to n+sod(n) for n = 6666659996 and 6666660023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666660061) 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, 311599 + ... + 332305.

It is an arithmetic number, because the mean of its divisors is an integer number (546955227).

Almost surely, 2^6666660064 is an apocalyptic number.

It is an amenable number.

6666660064 is a deficient number, since it is larger than the sum of its proper divisors (6460265384).

6666660064 is a wasteful number, since it uses less digits than its factorization.

6666660064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30778 (or 30770 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 46.

The square root of 6666660064 is about 81649.6176598519. The cubic root of 6666660064 is about 1882.0714364271.

The spelling of 6666660064 in words is "six billion, six hundred sixty-six million, six hundred sixty thousand, sixty-four".