9688157617 has 2 divisors, whose sum is σ = 9688157618. Its totient is φ = 9688157616.

The previous prime is 9688157597. The next prime is 9688157639. The reversal of 9688157617 is 7167518869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9200454561 + 487703056 = 95919^2 + 22084^2 .

It is a cyclic number.

It is not a de Polignac number, because 9688157617 - 2¹¹ = 9688155569 is a prime.

It is not a weakly prime, because it can be changed into another prime (9688157117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4844078808 + 4844078809.

It is an arithmetic number, because the mean of its divisors is an integer number (4844078809).

Almost surely, 2^9688157617 is an apocalyptic number.

It is an amenable number.

9688157617 is a deficient number, since it is larger than the sum of its proper divisors (1).

9688157617 is an equidigital number, since it uses as much as digits as its factorization.

9688157617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 58.

The square root of 9688157617 is about 98428.4390661561. The cubic root of 9688157617 is about 2131.8029813969.

The spelling of 9688157617 in words is "nine billion, six hundred eighty-eight million, one hundred fifty-seven thousand, six hundred seventeen".