664482 has 32 divisors (see below), whose sum is σ = 1636992. Its totient is φ = 175104.

The previous prime is 664471. The next prime is 664507. The reversal of 664482 is 284466.

It is a congruent number.

It is an unprimeable number.

664482 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63 + ... + 1154.

It is an arithmetic number, because the mean of its divisors is an integer number (51156).

2⁶⁶⁴⁴⁸² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818496).

664482 is an abundant number, since it is smaller than the sum of its proper divisors (972510).

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

664482 is a wasteful number, since it uses less digits than its factorization.

664482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242.

The product of its digits is 9216, while the sum is 30.

The square root of 664482 is about 815.1576534634. The cubic root of 664482 is about 87.2625179424.

The spelling of 664482 in words is "six hundred sixty-four thousand, four hundred eighty-two".