6664907 has 8 divisors (see below), whose sum is σ = 6927360. Its totient is φ = 6405480.

The previous prime is 6664891. The next prime is 6664937. The reversal of 6664907 is 7094666.

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 6664907 - 2⁴ = 6664891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6664937) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4394 + ... + 5712.

It is an arithmetic number, because the mean of its divisors is an integer number (865920).

Almost surely, 2^6664907 is an apocalyptic number.

6664907 is a deficient number, since it is larger than the sum of its proper divisors (262453).

6664907 is a wasteful number, since it uses less digits than its factorization.

6664907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 6664907 is about 2581.6481169981. The cubic root of 6664907 is about 188.1906452217.

The spelling of 6664907 in words is "six million, six hundred sixty-four thousand, nine hundred seven".