9645351617 has 4 divisors (see below), whose sum is σ = 10522201776. Its totient is φ = 8768501460.

The previous prime is 9645351601. The next prime is 9645351619. The reversal of 9645351617 is 7161535469.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9645351617 - 2⁴ = 9645351601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9645351619) 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, 438425063 + ... + 438425084.

It is an arithmetic number, because the mean of its divisors is an integer number (2630550444).

Almost surely, 2^9645351617 is an apocalyptic number.

It is an amenable number.

9645351617 is a deficient number, since it is larger than the sum of its proper divisors (876850159).

9645351617 is a wasteful number, since it uses less digits than its factorization.

9645351617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876850158.

The product of its digits is 680400, while the sum is 47.

The square root of 9645351617 is about 98210.7510255369. The cubic root of 9645351617 is about 2128.6586378504.

The spelling of 9645351617 in words is "nine billion, six hundred forty-five million, three hundred fifty-one thousand, six hundred seventeen".