489664 has 28 divisors (see below), whose sum is σ = 1111504. Its totient is φ = 209664.

The previous prime is 489659. The next prime is 489673. The reversal of 489664 is 466984.

It is a tau number, because it is divible by the number of its divisors (28).

It is a nialpdrome in base 14.

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, 99 + ... + 994.

2⁴⁸⁹⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

489664 is an abundant number, since it is smaller than the sum of its proper divisors (621840).

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

489664 is a wasteful number, since it uses less digits than its factorization.

489664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1102 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 489664 is about 699.7599588430. The cubic root of 489664 is about 78.8193275445.

The spelling of 489664 in words is "four hundred eighty-nine thousand, six hundred sixty-four".