164098321 has 4 divisors (see below), whose sum is σ = 164171700. Its totient is φ = 164024944.

The previous prime is 164098313. The next prime is 164098349. The reversal of 164098321 is 123890461.

164098321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49843600 + 114254721 = 7060^2 + 10689^2 .

It is a cyclic number.

It is not a de Polignac number, because 164098321 - 2³ = 164098313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164098381) 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, 33226 + ... + 37843.

It is an arithmetic number, because the mean of its divisors is an integer number (41042925).

Almost surely, 2^164098321 is an apocalyptic number.

It is an amenable number.

164098321 is a deficient number, since it is larger than the sum of its proper divisors (73379).

164098321 is an equidigital number, since it uses as much as digits as its factorization.

164098321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73378.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 164098321 is about 12810.0866897925. The cubic root of 164098321 is about 547.4797318102.

The spelling of 164098321 in words is "one hundred sixty-four million, ninety-eight thousand, three hundred twenty-one".