9715987648 has 28 divisors (see below), whose sum is σ = 19329775920. Its totient is φ = 4845492992.

The previous prime is 9715987601. The next prime is 9715987703. The reversal of 9715987648 is 8467895179.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 9715987648.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 170236 + ... + 220027.

It is an arithmetic number, because the mean of its divisors is an integer number (690349140).

Almost surely, 2^9715987648 is an apocalyptic number.

It is an amenable number.

9715987648 is a deficient number, since it is larger than the sum of its proper divisors (9613788272).

9715987648 is a wasteful number, since it uses less digits than its factorization.

9715987648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390664 (or 390654 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 64.

The square root of 9715987648 is about 98569.7095866676. The cubic root of 9715987648 is about 2133.8422898516.

The spelling of 9715987648 in words is "nine billion, seven hundred fifteen million, nine hundred eighty-seven thousand, six hundred forty-eight".