320198670 has 160 divisors (see below), whose sum is σ = 950839200. Its totient is φ = 77623920.

The previous prime is 320198651. The next prime is 320198717. The reversal of 320198670 is 76891023.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 29108965 + ... + 29108975.

It is an arithmetic number, because the mean of its divisors is an integer number (5942745).

Almost surely, 2^320198670 is an apocalyptic number.

320198670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 320198670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475419600).

320198670 is an abundant number, since it is smaller than the sum of its proper divisors (630640530).

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

320198670 is an frugal number, since it uses more digits than its factorization.

320198670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 320198670 is about 17894.0959536938. The cubic root of 320198670 is about 684.1318997711.

The spelling of 320198670 in words is "three hundred twenty million, one hundred ninety-eight thousand, six hundred seventy".