9947664 has 40 divisors (see below), whose sum is σ = 28554720. Its totient is φ = 3315744.

The previous prime is 9947653. The next prime is 9947671. The reversal of 9947664 is 4667499.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11082 + ... + 11945.

It is an arithmetic number, because the mean of its divisors is an integer number (713868).

Almost surely, 2^9947664 is an apocalyptic number.

It is an amenable number.

9947664 is an abundant number, since it is smaller than the sum of its proper divisors (18607056).

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

9947664 is a wasteful number, since it uses less digits than its factorization.

9947664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23044 (or 23032 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 9947664 is about 3153.9917564889. The cubic root of 9947664 is about 215.0669630970.

The spelling of 9947664 in words is "nine million, nine hundred forty-seven thousand, six hundred sixty-four".