9600006661 has 4 divisors (see below), whose sum is σ = 10971436192. Its totient is φ = 8228577132.

The previous prime is 9600006659. The next prime is 9600006683. The reversal of 9600006661 is 1666000069.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9600006661 - 2¹ = 9600006659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9600006601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685714755 + ... + 685714768.

It is an arithmetic number, because the mean of its divisors is an integer number (2742859048).

Almost surely, 2^9600006661 is an apocalyptic number.

It is an amenable number.

9600006661 is a deficient number, since it is larger than the sum of its proper divisors (1371429531).

9600006661 is a wasteful number, since it uses less digits than its factorization.

9600006661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371429530.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 9600006661 is about 97979.6237030945. The cubic root of 9600006661 is about 2125.3176299185.

The spelling of 9600006661 in words is "nine billion, six hundred million, six thousand, six hundred sixty-one".