9888664 has 32 divisors (see below), whose sum is σ = 19828800. Its totient is φ = 4609440.

The previous prime is 9888661. The next prime is 9888719. The reversal of 9888664 is 4668889.

9888664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9888661) 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, 9699 + ... + 10669.

It is an arithmetic number, because the mean of its divisors is an integer number (619650).

Almost surely, 2^9888664 is an apocalyptic number.

It is an amenable number.

9888664 is an abundant number, since it is smaller than the sum of its proper divisors (9940136).

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

9888664 is a wasteful number, since it uses less digits than its factorization.

9888664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1059 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 9888664 is about 3144.6246198871. The cubic root of 9888664 is about 214.6409294058.

The spelling of 9888664 in words is "nine million, eight hundred eighty-eight thousand, six hundred sixty-four".