320069960 has 96 divisors (see below), whose sum is σ = 849589560. Its totient is φ = 108186624.

The previous prime is 320069957. The next prime is 320069983. The reversal of 320069960 is 69960023.

It can be written as a sum of positive squares in 4 ways, for example, as 297010756 + 23059204 = 17234^2 + 4802^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 320069960.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141962 + ... + 144198.

Almost surely, 2^320069960 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 320069960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424794780).

320069960 is an abundant number, since it is smaller than the sum of its proper divisors (529519600).

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

320069960 is a wasteful number, since it uses less digits than its factorization.

320069960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335 (or 2324 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 320069960 is about 17890.4991545792. The cubic root of 320069960 is about 684.0402208375.

The spelling of 320069960 in words is "three hundred twenty million, sixty-nine thousand, nine hundred sixty".