9664667 has 4 divisors (see below), whose sum is σ = 9696456. Its totient is φ = 9632880.

The previous prime is 9664661. The next prime is 9664679. The reversal of 9664667 is 7664669.

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 9664667 - 2⁴ = 9664651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9664661) 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 3 ways as a sum of consecutive naturals, for example, 15434 + ... + 16047.

It is an arithmetic number, because the mean of its divisors is an integer number (2424114).

Almost surely, 2^9664667 is an apocalyptic number.

9664667 is a deficient number, since it is larger than the sum of its proper divisors (31789).

9664667 is a wasteful number, since it uses less digits than its factorization.

9664667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31788.

The product of its digits is 326592, while the sum is 44.

The square root of 9664667 is about 3108.8047542424. The cubic root of 9664667 is about 213.0078611718.

The spelling of 9664667 in words is "nine million, six hundred sixty-four thousand, six hundred sixty-seven".