9688720754241 has 9 divisors (see below), whose sum is σ = 13994832355491. Its totient is φ = 6459140944152.

The previous prime is 9688720754179. The next prime is 9688720754261. The reversal of 9688720754241 is 1424570278869.

It is a happy number.

The square root of 9688720754241 is 3112671.

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

9688720754241 is a `hidden beast` number, since 9 + 6 + 8 + 87 + 2 + 0 + 7 + 542 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6355919999025 + 3332800755216 = 2521095^2 + 1825596^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 9688720754241 - 2⁷ = 9688720754113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9688720754261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8819235 + ... + 9856791.

Almost surely, 2^{9688720754241} is an apocalyptic number.

9688720754241 is the 3112671-st square number.

9688720754241 is the 1556336-th centered octagonal number.

It is an amenable number.

9688720754241 is a deficient number, since it is larger than the sum of its proper divisors (4306111601250).

9688720754241 is an frugal number, since it uses more digits than its factorization.

9688720754241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075120 (or 1037560 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 9688720754241 in words is "nine trillion, six hundred eighty-eight billion, seven hundred twenty million, seven hundred fifty-four thousand, two hundred forty-one".