646352 has 40 divisors (see below), whose sum is σ = 1488000. Its totient is φ = 266112.

The previous prime is 646339. The next prime is 646379. The reversal of 646352 is 253646.

646352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3149 + ... + 3347.

It is an arithmetic number, because the mean of its divisors is an integer number (37200).

2⁶⁴⁶³⁵² 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 646352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744000).

646352 is an abundant number, since it is smaller than the sum of its proper divisors (841648).

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

646352 is a wasteful number, since it uses less digits than its factorization.

646352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 237 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 646352 is about 803.9601980198. The cubic root of 646352 is about 86.4615530744.

Adding to 646352 its reverse (253646), we get a palindrome (899998).

The spelling of 646352 in words is "six hundred forty-six thousand, three hundred fifty-two".