9908661 has 8 divisors (see below), whose sum is σ = 15098944. Its totient is φ = 5662080.

The previous prime is 9908651. The next prime is 9908693. The reversal of 9908661 is 1668099.

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

It is not a de Polignac number, because 9908661 - 2⁵ = 9908629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9908621) 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, 235900 + ... + 235941.

It is an arithmetic number, because the mean of its divisors is an integer number (1887368).

Almost surely, 2^9908661 is an apocalyptic number.

It is an amenable number.

9908661 is a deficient number, since it is larger than the sum of its proper divisors (5190283).

9908661 is a wasteful number, since it uses less digits than its factorization.

9908661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471851.

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

The square root of 9908661 is about 3147.8025668711. The cubic root of 9908661 is about 214.7855153236.

The spelling of 9908661 in words is "nine million, nine hundred eight thousand, six hundred sixty-one".