320668608 has 56 divisors (see below), whose sum is σ = 913707088. Its totient is φ = 98666496.

The previous prime is 320668597. The next prime is 320668627. The reversal of 320668608 is 806866023.

It is a super-4 number, since 4×320668608⁴ (a number of 35 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61741 + ... + 66732.

It is an arithmetic number, because the mean of its divisors is an integer number (16316198).

Almost surely, 2^320668608 is an apocalyptic number.

It is an amenable number.

320668608 is an abundant number, since it is smaller than the sum of its proper divisors (593038480).

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

320668608 is a wasteful number, since it uses less digits than its factorization.

320668608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128501 (or 128491 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 320668608 is about 17907.2222301506. Note that the first 4 decimals coincide. The cubic root of 320668608 is about 684.4664237740.

The spelling of 320668608 in words is "three hundred twenty million, six hundred sixty-eight thousand, six hundred eight".