9655961317 has 4 divisors (see below), whose sum is σ = 9656161900. Its totient is φ = 9655760736.

The previous prime is 9655961311. The next prime is 9655961347. The reversal of 9655961317 is 7131695569.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7131695569 = 83 ⋅85924043.

It can be written as a sum of positive squares in 2 ways, for example, as 8483515236 + 1172446081 = 92106^2 + 34241^2 .

It is a 3-Lehmer number, since φ(9655961317) divides (9655961317-1)³.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9655961317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9655961311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20059 + ... + 140407.

It is an arithmetic number, because the mean of its divisors is an integer number (2414040475).

It is a Poulet number, since it divides 2^9655961316-1.

Almost surely, 2^9655961317 is an apocalyptic number.

9655961317 is the 80233-rd pentagonal number.

It is an amenable number.

9655961317 is a deficient number, since it is larger than the sum of its proper divisors (200583).

9655961317 is a wasteful number, since it uses less digits than its factorization.

9655961317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200582.

The product of its digits is 1530900, while the sum is 52.

The square root of 9655961317 is about 98264.7511420041. The cubic root of 9655961317 is about 2129.4388462759.

The spelling of 9655961317 in words is "nine billion, six hundred fifty-five million, nine hundred sixty-one thousand, three hundred seventeen".