666666333313 has 8 divisors (see below), whose sum is σ = 667947204000. Its totient is φ = 665385847008.

The previous prime is 666666333301. The next prime is 666666333353. The reversal of 666666333313 is 313333666666.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 666666333313 - 2³⁷ = 529227379841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666666333353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3505138 + ... + 3690436.

It is an arithmetic number, because the mean of its divisors is an integer number (83493400500).

Almost surely, 2^666666333313 is an apocalyptic number.

It is an amenable number.

666666333313 is a deficient number, since it is larger than the sum of its proper divisors (1280870687).

666666333313 is a wasteful number, since it uses less digits than its factorization.

666666333313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192191.

The product of its digits is 11337408, while the sum is 52.

Adding to 666666333313 its reverse (313333666666), we get a palindrome (979999999979).

The spelling of 666666333313 in words is "six hundred sixty-six billion, six hundred sixty-six million, three hundred thirty-three thousand, three hundred thirteen".