323620660 has 48 divisors (see below), whose sum is σ = 743323392. Its totient is φ = 117372800.

The previous prime is 323620637. The next prime is 323620669. The reversal of 323620660 is 66026323.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323620669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93114 + ... + 96526.

It is an arithmetic number, because the mean of its divisors is an integer number (15485904).

Almost surely, 2^323620660 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 323620660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371661696).

323620660 is an abundant number, since it is smaller than the sum of its proper divisors (419702732).

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

323620660 is a wasteful number, since it uses less digits than its factorization.

323620660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864 (or 3862 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 323620660 is about 17989.4596917195. The cubic root of 323620660 is about 686.5603940016.

Adding to 323620660 its reverse (66026323), we get a palindrome (389646983).

The spelling of 323620660 in words is "three hundred twenty-three million, six hundred twenty thousand, six hundred sixty".