9975667 has 4 divisors (see below), whose sum is σ = 10743040. Its totient is φ = 9208296.

The previous prime is 9975643. The next prime is 9975683. The reversal of 9975667 is 7665799.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9975667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9975667.

It is not an unprimeable number, because it can be changed into a prime (9975067) 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, 383667 + ... + 383692.

It is an arithmetic number, because the mean of its divisors is an integer number (2685760).

Almost surely, 2^9975667 is an apocalyptic number.

9975667 is a deficient number, since it is larger than the sum of its proper divisors (767373).

9975667 is a wasteful number, since it uses less digits than its factorization.

9975667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767372.

The product of its digits is 714420, while the sum is 49.

The square root of 9975667 is about 3158.4279317407. The cubic root of 9975667 is about 215.2685808769.

The spelling of 9975667 in words is "nine million, nine hundred seventy-five thousand, six hundred sixty-seven".