16680233 has 4 divisors (see below), whose sum is σ = 17558160. Its totient is φ = 15802308.

The previous prime is 16680227. The next prime is 16680239. The reversal of 16680233 is 33208661.

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.

It is an interprime number because it is at equal distance from previous prime (16680227) and next prime (16680239).

It is a cyclic number.

It is not a de Polignac number, because 16680233 - 2⁸ = 16679977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16680196 and 16680205.

It is not an unprimeable number, because it can be changed into a prime (16680239) 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 3 ways as a sum of consecutive naturals, for example, 438935 + ... + 438972.

It is an arithmetic number, because the mean of its divisors is an integer number (4389540).

Almost surely, 2^16680233 is an apocalyptic number.

It is an amenable number.

16680233 is a deficient number, since it is larger than the sum of its proper divisors (877927).

16680233 is an equidigital number, since it uses as much as digits as its factorization.

16680233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877926.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 16680233 is about 4084.1440963805. The cubic root of 16680233 is about 255.5057653962.

Adding to 16680233 its reverse (33208661), we get a palindrome (49888894).

The spelling of 16680233 in words is "sixteen million, six hundred eighty thousand, two hundred thirty-three".