6665313 has 4 divisors (see below), whose sum is σ = 8887088. Its totient is φ = 4443540.

The previous prime is 6665297. The next prime is 6665317. The reversal of 6665313 is 3135666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6665313 - 2⁴ = 6665297 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6665317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110883 + ... + 1110888.

It is an arithmetic number, because the mean of its divisors is an integer number (2221772).

Almost surely, 2^6665313 is an apocalyptic number.

It is an amenable number.

6665313 is a deficient number, since it is larger than the sum of its proper divisors (2221775).

6665313 is a wasteful number, since it uses less digits than its factorization.

6665313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221774.

The product of its digits is 9720, while the sum is 30.

The square root of 6665313 is about 2581.7267477407. The cubic root of 6665313 is about 188.1944664229.

It can be divided in two parts, 66653 and 13, that added together give a palindrome (66666).

The spelling of 6665313 in words is "six million, six hundred sixty-five thousand, three hundred thirteen".