213164621 has 8 divisors (see below), whose sum is σ = 223555200. Its totient is φ = 202867632.

The previous prime is 213164593. The next prime is 213164639. The reversal of 213164621 is 126461312.

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 213164621 - 2⁶ = 213164557 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 (213164671) 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 7 ways as a sum of consecutive naturals, for example, 18710 + ... + 27863.

It is an arithmetic number, because the mean of its divisors is an integer number (27944400).

Almost surely, 2^213164621 is an apocalyptic number.

It is an amenable number.

213164621 is a deficient number, since it is larger than the sum of its proper divisors (10390579).

213164621 is a wasteful number, since it uses less digits than its factorization.

213164621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46795.

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

The square root of 213164621 is about 14600.1582525670. The cubic root of 213164621 is about 597.3630771142.

The spelling of 213164621 in words is "two hundred thirteen million, one hundred sixty-four thousand, six hundred twenty-one".