6606666005 has 8 divisors (see below), whose sum is σ = 7980503424. Its totient is φ = 5250330000.

The previous prime is 6606665999. The next prime is 6606666043. The reversal of 6606666005 is 5006666066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6606666005 - 2¹² = 6606661909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4374521 + ... + 4376030.

It is an arithmetic number, because the mean of its divisors is an integer number (997562928).

Almost surely, 2^6606666005 is an apocalyptic number.

It is an amenable number.

6606666005 is a deficient number, since it is larger than the sum of its proper divisors (1373837419).

6606666005 is a wasteful number, since it uses less digits than its factorization.

6606666005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8750707.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 6606666005 is about 81281.4001171240. The cubic root of 6606666005 is about 1876.4087550938.

The spelling of 6606666005 in words is "six billion, six hundred six million, six hundred sixty-six thousand, five".