9543664 has 40 divisors (see below), whose sum is σ = 21092400. Its totient is φ = 4144128.

The previous prime is 9543659. The next prime is 9543673. The reversal of 9543664 is 4663459.

9543664 = T₁₁₇ + T₁₁₈ + ... + T₃₈₈.

It is a happy number.

It is a super-3 number, since 3×9543664³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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, 2187 + ... + 4885.

It is an arithmetic number, because the mean of its divisors is an integer number (527310).

Almost surely, 2^9543664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9543664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10546200).

9543664 is an abundant number, since it is smaller than the sum of its proper divisors (11548736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9543664 is a wasteful number, since it uses less digits than its factorization.

9543664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737 (or 2731 counting only the distinct ones).

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

The square root of 9543664 is about 3089.2821172564. The cubic root of 9543664 is about 212.1151623028.

The spelling of 9543664 in words is "nine million, five hundred forty-three thousand, six hundred sixty-four".