320342664 has 16 divisors (see below), whose sum is σ = 800856720. Its totient is φ = 106780880.

The previous prime is 320342657. The next prime is 320342677. The reversal of 320342664 is 466243023.

It is a happy number.

320342664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6673782 + ... + 6673829.

It is an arithmetic number, because the mean of its divisors is an integer number (50053545).

Almost surely, 2^320342664 is an apocalyptic number.

It is an amenable number.

320342664 is an abundant number, since it is smaller than the sum of its proper divisors (480514056).

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

320342664 is a wasteful number, since it uses less digits than its factorization.

320342664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347620 (or 13347616 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 320342664 is about 17898.1190073147. The cubic root of 320342664 is about 684.2344362428.

Adding to 320342664 its reverse (466243023), we get a palindrome (786585687).

The spelling of 320342664 in words is "three hundred twenty million, three hundred forty-two thousand, six hundred sixty-four".