320828686 has 8 divisors (see below), whose sum is σ = 481380984. Its totient is φ = 160368360.

The previous prime is 320828647. The next prime is 320828687. The reversal of 320828686 is 686828023.

320828686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320828687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13485 + ... + 28696.

It is an arithmetic number, because the mean of its divisors is an integer number (60172623).

Almost surely, 2^320828686 is an apocalyptic number.

320828686 is a deficient number, since it is larger than the sum of its proper divisors (160552298).

320828686 is a wasteful number, since it uses less digits than its factorization.

320828686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45986.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 320828686 is about 17911.6913215922. The cubic root of 320828686 is about 684.5803002042.

The spelling of 320828686 in words is "three hundred twenty million, eight hundred twenty-eight thousand, six hundred eighty-six".