9696621817 has 4 divisors (see below), whose sum is σ = 9697631476. Its totient is φ = 9695612160.

The previous prime is 9696621787. The next prime is 9696621853. The reversal of 9696621817 is 7181266969.

9696621817 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 670861801 + 9025760016 = 25901^2 + 95004^2 .

It is a cyclic number.

It is not a de Polignac number, because 9696621817 - 2⁷ = 9696621689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9696621877) 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 3 ways as a sum of consecutive naturals, for example, 490284 + ... + 509677.

It is an arithmetic number, because the mean of its divisors is an integer number (2424407869).

Almost surely, 2^9696621817 is an apocalyptic number.

It is an amenable number.

9696621817 is a deficient number, since it is larger than the sum of its proper divisors (1009659).

9696621817 is an equidigital number, since it uses as much as digits as its factorization.

9696621817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009658.

The product of its digits is 1959552, while the sum is 55.

The square root of 9696621817 is about 98471.4263987275. The cubic root of 9696621817 is about 2132.4236275938.

The spelling of 9696621817 in words is "nine billion, six hundred ninety-six million, six hundred twenty-one thousand, eight hundred seventeen".