9666786920 has 64 divisors (see below), whose sum is σ = 25714627200. Its totient is φ = 3200037120.

The previous prime is 9666786901. The next prime is 9666786923. The reversal of 9666786920 is 296876669.

It is a self number, because there is not a number n which added to its sum of digits gives 9666786920.

It is not an unprimeable number, because it can be changed into a prime (9666786923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587126 + ... + 603365.

It is an arithmetic number, because the mean of its divisors is an integer number (401791050).

Almost surely, 2^9666786920 is an apocalyptic number.

It is an amenable number.

9666786920 is an abundant number, since it is smaller than the sum of its proper divisors (16047840280).

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

9666786920 is a wasteful number, since it uses less digits than its factorization.

9666786920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190538 (or 1190534 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 59.

The square root of 9666786920 is about 98319.8195685895. The cubic root of 9666786920 is about 2130.2343427649.

The spelling of 9666786920 in words is "nine billion, six hundred sixty-six million, seven hundred eighty-six thousand, nine hundred twenty".