9661317264 has 45 divisors (see below), whose sum is σ = 27041571219. Its totient is φ = 3220045920.

The previous prime is 9661317257. The next prime is 9661317299. The reversal of 9661317264 is 4627131669.

The square root of 9661317264 is 98292.

It is a perfect power (a square), and thus also a powerful number.

9661317264 is a `hidden beast` number, since 9 + 6 + 613 + 1 + 7 + 26 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1175409 + ... + 1183599.

Almost surely, 2^9661317264 is an apocalyptic number.

9661317264 is the 98292-nd square number.

It is an amenable number.

9661317264 is an abundant number, since it is smaller than the sum of its proper divisors (17380253955).

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

9661317264 is an frugal number, since it uses more digits than its factorization.

9661317264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16396 (or 8196 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The cubic root of 9661317264 is about 2129.8324909598.

The spelling of 9661317264 in words is "nine billion, six hundred sixty-one million, three hundred seventeen thousand, two hundred sixty-four".