664350 has 48 divisors (see below), whose sum is σ = 1702272. Its totient is φ = 171360.

The previous prime is 664331. The next prime is 664357. The reversal of 664350 is 53466.

It is a self number, because there is not a number n which added to its sum of digits gives 664350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6399 + ... + 6501.

It is an arithmetic number, because the mean of its divisors is an integer number (35464).

2⁶⁶⁴³⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851136).

664350 is an abundant number, since it is smaller than the sum of its proper divisors (1037922).

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

664350 is a wasteful number, since it uses less digits than its factorization.

664350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 664350 is about 815.0766835090. The cubic root of 664350 is about 87.2567392982.

The spelling of 664350 in words is "six hundred sixty-four thousand, three hundred fifty".