6666976676 has 6 divisors (see below), whose sum is σ = 11667209190. Its totient is φ = 3333488336.

The previous prime is 6666976669. The next prime is 6666976681. The reversal of 6666976676 is 6766796666.

It can be written as a sum of positive squares in only one way, i.e., 6150323776 + 516652900 = 78424^2 + 22730^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833372081 + ... + 833372088.

It is an arithmetic number, because the mean of its divisors is an integer number (1944534865).

Almost surely, 2^6666976676 is an apocalyptic number.

It is an amenable number.

6666976676 is a deficient number, since it is larger than the sum of its proper divisors (5000232514).

6666976676 is a wasteful number, since it uses less digits than its factorization.

6666976676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666744173 (or 1666744171 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 65.

The square root of 6666976676 is about 81651.5564824088. The cubic root of 6666976676 is about 1882.1012303051.

The spelling of 6666976676 in words is "six billion, six hundred sixty-six million, nine hundred seventy-six thousand, six hundred seventy-six".