6664675 has 6 divisors (see below), whose sum is σ = 8264228. Its totient is φ = 5331720.

The previous prime is 6664667. The next prime is 6664711. The reversal of 6664675 is 5764666.

It is not a de Polignac number, because 6664675 - 2³ = 6664667 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133269 + ... + 133318.

Almost surely, 2^6664675 is an apocalyptic number.

6664675 is a deficient number, since it is larger than the sum of its proper divisors (1599553).

6664675 is a wasteful number, since it uses less digits than its factorization.

6664675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266597 (or 266592 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 6664675 is about 2581.6031840699. The cubic root of 6664675 is about 188.1884616086.

Subtracting from 6664675 its reverse (5764666), we obtain a palindrome (900009).

The spelling of 6664675 in words is "six million, six hundred sixty-four thousand, six hundred seventy-five".