646032 has 40 divisors (see below), whose sum is σ = 1713184. Its totient is φ = 209664.

The previous prime is 646027. The next prime is 646039. The reversal of 646032 is 230646.

646032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 646032.

It is not an unprimeable number, because it can be changed into a prime (646039) by changing a digit.

646032 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 7 ways as a sum of consecutive naturals, for example, 1908 + ... + 2220.

2⁶⁴⁶⁰³² 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 646032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (856592).

646032 is an abundant number, since it is smaller than the sum of its proper divisors (1067152).

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

646032 is a wasteful number, since it uses less digits than its factorization.

646032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 646032 is about 803.7611585540. The cubic root of 646032 is about 86.4472820764.

Adding to 646032 its reverse (230646), we get a palindrome (876678).

The spelling of 646032 in words is "six hundred forty-six thousand, thirty-two".