16611213 has 8 divisors (see below), whose sum is σ = 22198176. Its totient is φ = 11049200.

The previous prime is 16611181. The next prime is 16611233. The reversal of 16611213 is 31211661.

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 16611213 - 2⁵ = 16611181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16611213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16611233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4623 + ... + 7388.

It is an arithmetic number, because the mean of its divisors is an integer number (2774772).

Almost surely, 2^16611213 is an apocalyptic number.

It is an amenable number.

16611213 is a deficient number, since it is larger than the sum of its proper divisors (5586963).

16611213 is a wasteful number, since it uses less digits than its factorization.

16611213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12475.

The product of its digits is 216, while the sum is 21.

The square root of 16611213 is about 4075.6855864995. The cubic root of 16611213 is about 255.1528648989.

Adding to 16611213 its reverse (31211661), we get a palindrome (47822874).

The spelling of 16611213 in words is "sixteen million, six hundred eleven thousand, two hundred thirteen".