9901668 has 24 divisors (see below), whose sum is σ = 26404672. Its totient is φ = 2829024.

The previous prime is 9901649. The next prime is 9901691. The reversal of 9901668 is 8661099.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58855 + ... + 59022.

Almost surely, 2^9901668 is an apocalyptic number.

It is an amenable number.

9901668 is an abundant number, since it is smaller than the sum of its proper divisors (16503004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9901668 is a wasteful number, since it uses less digits than its factorization.

9901668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117891 (or 117889 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 9901668 is about 3146.6915959464. The cubic root of 9901668 is about 214.7349754107.

The spelling of 9901668 in words is "nine million, nine hundred one thousand, six hundred sixty-eight".