9664543 has 8 divisors (see below), whose sum is σ = 11197088. Its totient is φ = 8169984.

The previous prime is 9664537. The next prime is 9664553. The reversal of 9664543 is 3454669.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9664543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8946 + ... + 9967.

It is an arithmetic number, because the mean of its divisors is an integer number (1399636).

Almost surely, 2^9664543 is an apocalyptic number.

9664543 is a deficient number, since it is larger than the sum of its proper divisors (1532545).

9664543 is a wasteful number, since it uses less digits than its factorization.

9664543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18993.

The product of its digits is 77760, while the sum is 37.

The square root of 9664543 is about 3108.7848108224. The cubic root of 9664543 is about 213.0069501872.

The spelling of 9664543 in words is "nine million, six hundred sixty-four thousand, five hundred forty-three".