9664533321 has 8 divisors (see below), whose sum is σ = 12920592960. Its totient is φ = 6425747952.

The previous prime is 9664533313. The next prime is 9664533377. The reversal of 9664533321 is 1233354669.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9664533321 - 2³ = 9664533313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9664533391) 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 7 ways as a sum of consecutive naturals, for example, 4317261 + ... + 4319498.

It is an arithmetic number, because the mean of its divisors is an integer number (1615074120).

Almost surely, 2^9664533321 is an apocalyptic number.

It is an amenable number.

9664533321 is a deficient number, since it is larger than the sum of its proper divisors (3256059639).

9664533321 is a wasteful number, since it uses less digits than its factorization.

9664533321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8637135.

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

The square root of 9664533321 is about 98308.3583475993. The cubic root of 9664533321 is about 2130.0687907867.

The spelling of 9664533321 in words is "nine billion, six hundred sixty-four million, five hundred thirty-three thousand, three hundred twenty-one".