320655000 has 80 divisors (see below), whose sum is σ = 1001773080. Its totient is φ = 85504000.

The previous prime is 320654989. The next prime is 320655007. The reversal of 320655000 is 556023.

320655000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320655007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4312 + ... + 25688.

Almost surely, 2^320655000 is an apocalyptic number.

320655000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320655000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500886540).

320655000 is an abundant number, since it is smaller than the sum of its proper divisors (681118080).

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

320655000 is a wasteful number, since it uses less digits than its factorization.

320655000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21406 (or 21387 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 320655000 is about 17906.8422676920. The cubic root of 320655000 is about 684.4567415552.

The spelling of 320655000 in words is "three hundred twenty million, six hundred fifty-five thousand".