9521664 has 40 divisors (see below), whose sum is σ = 25370400. Its totient is φ = 3173376.

The previous prime is 9521653. The next prime is 9521671. The reversal of 9521664 is 4661259.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1564 + ... + 4635.

It is an arithmetic number, because the mean of its divisors is an integer number (634260).

Almost surely, 2^9521664 is an apocalyptic number.

It is an amenable number.

9521664 is an abundant number, since it is smaller than the sum of its proper divisors (15848736).

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

9521664 is an equidigital number, since it uses as much as digits as its factorization.

9521664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220 (or 6204 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 9521664 is about 3085.7193650752. The cubic root of 9521664 is about 211.9520480131.

The spelling of 9521664 in words is "nine million, five hundred twenty-one thousand, six hundred sixty-four".