164335217 has 4 divisors (see below), whose sum is σ = 164361456. Its totient is φ = 164308980.

The previous prime is 164335189. The next prime is 164335219. The reversal of 164335217 is 712533461.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 712533461 = 17 ⋅41913733.

It is a cyclic number.

It is not a de Polignac number, because 164335217 - 2⁶ = 164335153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164335219) 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, 2378 + ... + 18284.

It is an arithmetic number, because the mean of its divisors is an integer number (41090364).

Almost surely, 2^164335217 is an apocalyptic number.

It is an amenable number.

164335217 is a deficient number, since it is larger than the sum of its proper divisors (26239).

164335217 is a wasteful number, since it uses less digits than its factorization.

164335217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26238.

The product of its digits is 15120, while the sum is 32.

The square root of 164335217 is about 12819.3298186762. The cubic root of 164335217 is about 547.7430564585.

Adding to 164335217 its reverse (712533461), we get a palindrome (876868678).

The spelling of 164335217 in words is "one hundred sixty-four million, three hundred thirty-five thousand, two hundred seventeen".