9709664 has 24 divisors (see below), whose sum is σ = 19776960. Its totient is φ = 4686976.

The previous prime is 9709663. The next prime is 9709673. The reversal of 9709664 is 4669079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9709663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4304 + ... + 6159.

It is an arithmetic number, because the mean of its divisors is an integer number (824040).

Almost surely, 2^9709664 is an apocalyptic number.

It is an amenable number.

9709664 is an abundant number, since it is smaller than the sum of its proper divisors (10067296).

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

9709664 is a wasteful number, since it uses less digits than its factorization.

9709664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10502 (or 10494 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 9709664 is about 3116.0333759445. The cubic root of 9709664 is about 213.3379252484.

The spelling of 9709664 in words is "nine million, seven hundred nine thousand, six hundred sixty-four".