164621213 has 8 divisors (see below), whose sum is σ = 169793280. Its totient is φ = 159518800.

The previous prime is 164621209. The next prime is 164621267. The reversal of 164621213 is 312126461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164621213 - 2² = 164621209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164621203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12593 + ... + 22086.

It is an arithmetic number, because the mean of its divisors is an integer number (21224160).

Almost surely, 2^164621213 is an apocalyptic number.

It is an amenable number.

164621213 is a deficient number, since it is larger than the sum of its proper divisors (5172067).

164621213 is a wasteful number, since it uses less digits than its factorization.

164621213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34827.

The product of its digits is 1728, while the sum is 26.

The square root of 164621213 is about 12830.4798429365. The cubic root of 164621213 is about 548.0606218566.

Adding to 164621213 its reverse (312126461), we get a palindrome (476747674).

The spelling of 164621213 in words is "one hundred sixty-four million, six hundred twenty-one thousand, two hundred thirteen".