16668029 has 4 divisors (see below), whose sum is σ = 19049184. Its totient is φ = 14286876.

The previous prime is 16668013. The next prime is 16668037. The reversal of 16668029 is 92086661.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92086661 = 107 ⋅860623.

It is a cyclic number.

It is not a de Polignac number, because 16668029 - 2⁴ = 16668013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16667983 and 16668001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668079) 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 3 ways as a sum of consecutive naturals, for example, 1190567 + ... + 1190580.

It is an arithmetic number, because the mean of its divisors is an integer number (4762296).

Almost surely, 2^16668029 is an apocalyptic number.

It is an amenable number.

16668029 is a deficient number, since it is larger than the sum of its proper divisors (2381155).

16668029 is an equidigital number, since it uses as much as digits as its factorization.

16668029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381154.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 16668029 is about 4082.6497523055. The cubic root of 16668029 is about 255.4434370675.

The spelling of 16668029 in words is "sixteen million, six hundred sixty-eight thousand, twenty-nine".