9666564 has 24 divisors (see below), whose sum is σ = 22982400. Its totient is φ = 3161184.

The previous prime is 9666563. The next prime is 9666571. The reversal of 9666564 is 4656669.

It is not an unprimeable number, because it can be changed into a prime (9666563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6964 + ... + 8235.

It is an arithmetic number, because the mean of its divisors is an integer number (957600).

Almost surely, 2^9666564 is an apocalyptic number.

It is an amenable number.

9666564 is an abundant number, since it is smaller than the sum of its proper divisors (13315836).

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

9666564 is a wasteful number, since it uses less digits than its factorization.

9666564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15259 (or 15257 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 9666564 is about 3109.1098404527. The cubic root of 9666564 is about 213.0217967952.

The spelling of 9666564 in words is "nine million, six hundred sixty-six thousand, five hundred sixty-four".