320647968 has 72 divisors (see below), whose sum is σ = 951507648. Its totient is φ = 102233472.

The previous prime is 320647967. The next prime is 320647969. The reversal of 320647968 is 869746023.

It is an interprime number because it is at equal distance from previous prime (320647967) and next prime (320647969).

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (320647967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17580 + ... + 30827.

It is an arithmetic number, because the mean of its divisors is an integer number (13215384).

Almost surely, 2^320647968 is an apocalyptic number.

It is an amenable number.

320647968 is an abundant number, since it is smaller than the sum of its proper divisors (630859680).

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

320647968 is a wasteful number, since it uses less digits than its factorization.

320647968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48446 (or 48435 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 320647968 is about 17906.6459170890. The cubic root of 320647968 is about 684.4517381143.

The spelling of 320647968 in words is "three hundred twenty million, six hundred forty-seven thousand, nine hundred sixty-eight".