9731664 has 60 divisors (see below), whose sum is σ = 28255136. Its totient is φ = 3242592.

The previous prime is 9731663. The next prime is 9731669. The reversal of 9731664 is 4661379.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9731663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2637 + ... + 5139.

Almost surely, 2^9731664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9731664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14127568).

9731664 is an abundant number, since it is smaller than the sum of its proper divisors (18523472).

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

9731664 is a wasteful number, since it uses less digits than its factorization.

9731664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526 (or 2508 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 9731664 is about 3119.5615076482. The cubic root of 9731664 is about 213.4989295853.

The spelling of 9731664 in words is "nine million, seven hundred thirty-one thousand, six hundred sixty-four".