9873664 has 18 divisors (see below), whose sum is σ = 19709270. Its totient is φ = 4936704.

The previous prime is 9873653. The next prime is 9873671. The reversal of 9873664 is 4663789.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8952064 + 921600 = 2992^2 + 960^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9873664.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19029 + ... + 19540.

Almost surely, 2^9873664 is an apocalyptic number.

It is an amenable number.

9873664 is a deficient number, since it is larger than the sum of its proper divisors (9835606).

9873664 is an equidigital number, since it uses as much as digits as its factorization.

9873664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38585 (or 38571 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 9873664 is about 3142.2386923975. The cubic root of 9873664 is about 214.5323457035.

The spelling of 9873664 in words is "nine million, eight hundred seventy-three thousand, six hundred sixty-four".