6666740067 has 16 divisors (see below), whose sum is σ = 9584025248. Its totient is φ = 4097779200.

The previous prime is 6666740029. The next prime is 6666740089. The reversal of 6666740067 is 7600476666.

It is not a de Polignac number, because 6666740067 - 2¹⁹ = 6666215779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6666739998 and 6666740025.

It is not an unprimeable number, because it can be changed into a prime (6666740567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66934 + ... + 133467.

It is an arithmetic number, because the mean of its divisors is an integer number (599001578).

Almost surely, 2^6666740067 is an apocalyptic number.

6666740067 is a deficient number, since it is larger than the sum of its proper divisors (2917285181).

6666740067 is a wasteful number, since it uses less digits than its factorization.

6666740067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201270.

The product of its (nonzero) digits is 1524096, while the sum is 48.

The square root of 6666740067 is about 81650.1075749444. The cubic root of 6666740067 is about 1882.0789649725.

The spelling of 6666740067 in words is "six billion, six hundred sixty-six million, seven hundred forty thousand, sixty-seven".