16663039 has 4 divisors (see below), whose sum is σ = 16717624. Its totient is φ = 16608456.

The previous prime is 16663037. The next prime is 16663091. The reversal of 16663039 is 93036661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16663039 - 2¹ = 16663037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16662995 and 16663013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663033) 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, 26832 + ... + 27445.

It is an arithmetic number, because the mean of its divisors is an integer number (4179406).

Almost surely, 2^16663039 is an apocalyptic number.

16663039 is a deficient number, since it is larger than the sum of its proper divisors (54585).

16663039 is an equidigital number, since it uses as much as digits as its factorization.

16663039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54584.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 16663039 is about 4082.0385838451. The cubic root of 16663039 is about 255.4179433518.

The spelling of 16663039 in words is "sixteen million, six hundred sixty-three thousand, thirty-nine".