320879616 has 88 divisors (see below), whose sum is σ = 868583040. Its totient is φ = 105295872.

The previous prime is 320879599. The next prime is 320879627. The reversal of 320879616 is 616978023.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205045 + ... + 206603.

Almost surely, 2^320879616 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 320879616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434291520).

320879616 is an abundant number, since it is smaller than the sum of its proper divisors (547703424).

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

320879616 is a wasteful number, since it uses less digits than its factorization.

320879616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 320879616 is about 17913.1129622966. The cubic root of 320879616 is about 684.6165228899.

The spelling of 320879616 in words is "three hundred twenty million, eight hundred seventy-nine thousand, six hundred sixteen".