909664 has 48 divisors (see below), whose sum is σ = 2128896. Its totient is φ = 374400.

The previous prime is 909637. The next prime is 909679. The reversal of 909664 is 466909.

It is a congruent number.

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, 6879 + ... + 7009.

It is an arithmetic number, because the mean of its divisors is an integer number (44352).

2⁹⁰⁹⁶⁶⁴ 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 909664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064448).

909664 is an abundant number, since it is smaller than the sum of its proper divisors (1219232).

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

909664 is a wasteful number, since it uses less digits than its factorization.

909664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 909664 is about 953.7630733049. The cubic root of 909664 is about 96.8932825709.

The spelling of 909664 in words is "nine hundred nine thousand, six hundred sixty-four".