6666223315 has 4 divisors (see below), whose sum is σ = 7999467984. Its totient is φ = 5332978648.

The previous prime is 6666223261. The next prime is 6666223327. The reversal of 6666223315 is 5133226666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6666223315 - 2¹¹ = 6666221267 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666622327 + ... + 666622336.

It is an arithmetic number, because the mean of its divisors is an integer number (1999866996).

Almost surely, 2^6666223315 is an apocalyptic number.

6666223315 is a deficient number, since it is larger than the sum of its proper divisors (1333244669).

6666223315 is a wasteful number, since it uses less digits than its factorization.

6666223315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333244668.

The product of its digits is 233280, while the sum is 40.

The square root of 6666223315 is about 81646.9430842331. The cubic root of 6666223315 is about 1882.0303358480.

The spelling of 6666223315 in words is "six billion, six hundred sixty-six million, two hundred twenty-three thousand, three hundred fifteen".