9897716064 has 96 divisors (see below), whose sum is σ = 27554567040. Its totient is φ = 3100116992.

The previous prime is 9897716057. The next prime is 9897716083. The reversal of 9897716064 is 4606177989.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 9897715995 and 9897716013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070887 + ... + 1080089.

It is an arithmetic number, because the mean of its divisors is an integer number (287026740).

Almost surely, 2^9897716064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9897716064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13777283520).

9897716064 is an abundant number, since it is smaller than the sum of its proper divisors (17656850976).

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

9897716064 is a wasteful number, since it uses less digits than its factorization.

9897716064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9892 (or 9884 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 9897716064 is about 99487.2658383976. The cubic root of 9897716064 is about 2147.0640339625.

The spelling of 9897716064 in words is "nine billion, eight hundred ninety-seven million, seven hundred sixteen thousand, sixty-four".