9666899 has 8 divisors (see below), whose sum is σ = 10575360. Its totient is φ = 8763400.

The previous prime is 9666887. The next prime is 9666901. The reversal of 9666899 is 9986669.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9666899 is a prime.

It is an Ulam number.

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 9666899.

It is not an unprimeable number, because it can be changed into a prime (9666799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3722 + ... + 5760.

It is an arithmetic number, because the mean of its divisors is an integer number (1321920).

Almost surely, 2^9666899 is an apocalyptic number.

9666899 is a deficient number, since it is larger than the sum of its proper divisors (908461).

9666899 is a wasteful number, since it uses less digits than its factorization.

9666899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481.

The product of its digits is 1259712, while the sum is 53.

The square root of 9666899 is about 3109.1637139269. The cubic root of 9666899 is about 213.0242575619.

The spelling of 9666899 in words is "nine million, six hundred sixty-six thousand, eight hundred ninety-nine".