9664783872 has 40 divisors (see below), whose sum is σ = 25747592376. Its totient is φ = 3221594112.

The previous prime is 9664783837. The next prime is 9664783873. The reversal of 9664783872 is 2783874669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664783873) 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, 3144553 + ... + 3147624.

Almost surely, 2^9664783872 is an apocalyptic number.

It is an amenable number.

9664783872 is an abundant number, since it is smaller than the sum of its proper divisors (16082808504).

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

9664783872 is an equidigital number, since it uses as much as digits as its factorization.

9664783872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6292198 (or 6292182 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 60.

The square root of 9664783872 is about 98309.6326511294. The cubic root of 9664783872 is about 2130.0871978233.

The spelling of 9664783872 in words is "nine billion, six hundred sixty-four million, seven hundred eighty-three thousand, eight hundred seventy-two".