9647986716 has 18 divisors (see below), whose sum is σ = 24387966512. Its totient is φ = 3215995560.

The previous prime is 9647986703. The next prime is 9647986723. The reversal of 9647986716 is 6176897469.

9647986716 is a `hidden beast` number, since 96 + 479 + 8 + 6 + 71 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×9647986716² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133999780 + ... + 133999851.

Almost surely, 2^9647986716 is an apocalyptic number.

It is an amenable number.

9647986716 is an abundant number, since it is smaller than the sum of its proper divisors (14739979796).

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

9647986716 is a wasteful number, since it uses less digits than its factorization.

9647986716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267999641 (or 267999636 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 9647986716 is about 98224.1656416587. The cubic root of 9647986716 is about 2128.8524692328.

The spelling of 9647986716 in words is "nine billion, six hundred forty-seven million, nine hundred eighty-six thousand, seven hundred sixteen".