9664505879 has 4 divisors (see below), whose sum is σ = 11045149584. Its totient is φ = 8283862176.

The previous prime is 9664505869. The next prime is 9664505897. The reversal of 9664505879 is 9785054669.

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

It is a cyclic number.

It is not a de Polignac number, because 9664505879 - 2⁴ = 9664505863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664505869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690321842 + ... + 690321855.

It is an arithmetic number, because the mean of its divisors is an integer number (2761287396).

Almost surely, 2^9664505879 is an apocalyptic number.

9664505879 is a deficient number, since it is larger than the sum of its proper divisors (1380643705).

9664505879 is a wasteful number, since it uses less digits than its factorization.

9664505879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380643704.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The square root of 9664505879 is about 98308.2187764584. The cubic root of 9664505879 is about 2130.0667747072.

The spelling of 9664505879 in words is "nine billion, six hundred sixty-four million, five hundred five thousand, eight hundred seventy-nine".