9663643005 has 16 divisors (see below), whose sum is σ = 15657550080. Its totient is φ = 5088702528.

The previous prime is 9663642853. The next prime is 9663643019. The reversal of 9663643005 is 5003463669.

It is not a de Polignac number, because 9663643005 - 2¹² = 9663638909 is a prime.

It is a super-2 number, since 2×9663643005² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4076302 + ... + 4078671.

It is an arithmetic number, because the mean of its divisors is an integer number (978596880).

Almost surely, 2^9663643005 is an apocalyptic number.

It is an amenable number.

9663643005 is a deficient number, since it is larger than the sum of its proper divisors (5993907075).

9663643005 is a wasteful number, since it uses less digits than its factorization.

9663643005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155060.

The product of its (nonzero) digits is 349920, while the sum is 42.

The square root of 9663643005 is about 98303.8300627193. The cubic root of 9663643005 is about 2130.0033800559.

The spelling of 9663643005 in words is "nine billion, six hundred sixty-three million, six hundred forty-three thousand, five".