9646665716 has 12 divisors (see below), whose sum is σ = 16942611588. Its totient is φ = 4805919552.

The previous prime is 9646665703. The next prime is 9646665751. The reversal of 9646665716 is 6175666469.

It can be written as a sum of positive squares in 2 ways, for example, as 2965238116 + 6681427600 = 54454^2 + 81740^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4352081 + ... + 4354296.

It is an arithmetic number, because the mean of its divisors is an integer number (1411884299).

Almost surely, 2^9646665716 is an apocalyptic number.

It is an amenable number.

9646665716 is a deficient number, since it is larger than the sum of its proper divisors (7295945872).

9646665716 is a wasteful number, since it uses less digits than its factorization.

9646665716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8706658 (or 8706656 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 56.

The square root of 9646665716 is about 98217.4409970042. The cubic root of 9646665716 is about 2128.7553041436.

The spelling of 9646665716 in words is "nine billion, six hundred forty-six million, six hundred sixty-five thousand, seven hundred sixteen".