16634213 has 2 divisors, whose sum is σ = 16634214. Its totient is φ = 16634212.

The previous prime is 16634203. The next prime is 16634227. The reversal of 16634213 is 31243661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11607649 + 5026564 = 3407^2 + 2242^2 .

It is a cyclic number.

It is not a de Polignac number, because 16634213 - 2⁸ = 16633957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_1069244 and since 16634213 and 1069244 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16634203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8317106 + 8317107.

It is an arithmetic number, because the mean of its divisors is an integer number (8317107).

Almost surely, 2^16634213 is an apocalyptic number.

It is an amenable number.

16634213 is a deficient number, since it is larger than the sum of its proper divisors (1).

16634213 is an equidigital number, since it uses as much as digits as its factorization.

16634213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 16634213 is about 4078.5062216454. The cubic root of 16634213 is about 255.2705727277.

Adding to 16634213 its reverse (31243661), we get a palindrome (47877874).

The spelling of 16634213 in words is "sixteen million, six hundred thirty-four thousand, two hundred thirteen".