164336321 has 4 divisors (see below), whose sum is σ = 164390832. Its totient is φ = 164281812.

The previous prime is 164336317. The next prime is 164336329. The reversal of 164336321 is 123633461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164336321 - 2² = 164336317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164336329) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 22451 + ... + 28856.

It is an arithmetic number, because the mean of its divisors is an integer number (41097708).

Almost surely, 2^164336321 is an apocalyptic number.

It is an amenable number.

164336321 is a deficient number, since it is larger than the sum of its proper divisors (54511).

164336321 is an equidigital number, since it uses as much as digits as its factorization.

164336321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54510.

The product of its digits is 7776, while the sum is 29.

The square root of 164336321 is about 12819.3728785772. The cubic root of 164336321 is about 547.7442830306.

Adding to 164336321 its reverse (123633461), we get a palindrome (287969782).

It can be divided in two parts, 164336 and 321, that multiplied together give a triangular number (52751856 = T₁₀₂₇₁).

The spelling of 164336321 in words is "one hundred sixty-four million, three hundred thirty-six thousand, three hundred twenty-one".