9668636523 has 240 divisors, whose sum is σ = 19284604416. Its totient is φ = 4714744320.

The previous prime is 9668636507. The next prime is 9668636557. The reversal of 9668636523 is 3256368669.

9668636523 is a `hidden beast` number, since 9 + 6 + 6 + 86 + 36 + 523 = 666.

9668636523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9668636523 - 2⁴ = 9668636507 is a prime.

Its product of digits (8398080) is a multiple of the sum of its prime factors (216).

It is a self number, because there is not a number n which added to its sum of digits gives 9668636523.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9668636503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 90361036 + ... + 90361142.

Almost surely, 2^9668636523 is an apocalyptic number.

9668636523 is a deficient number, since it is larger than the sum of its proper divisors (9615967893).

9668636523 is a wasteful number, since it uses less digits than its factorization.

9668636523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 194 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 54.

The square root of 9668636523 is about 98329.2251723769. The cubic root of 9668636523 is about 2130.3701975081.

The spelling of 9668636523 in words is "nine billion, six hundred sixty-eight million, six hundred thirty-six thousand, five hundred twenty-three".