16664383 has 4 divisors (see below), whose sum is σ = 16677000. Its totient is φ = 16651768.

The previous prime is 16664377. The next prime is 16664399. The reversal of 16664383 is 38346661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38346661 = 173 ⋅221657.

It is a cyclic number.

It is not a de Polignac number, because 16664383 - 2¹⁷ = 16533311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16664353) 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, 4060 + ... + 7057.

It is an arithmetic number, because the mean of its divisors is an integer number (4169250).

Almost surely, 2^16664383 is an apocalyptic number.

16664383 is a deficient number, since it is larger than the sum of its proper divisors (12617).

16664383 is a wasteful number, since it uses less digits than its factorization.

16664383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12616.

The product of its digits is 62208, while the sum is 37.

The square root of 16664383 is about 4082.2032041534. The cubic root of 16664383 is about 255.4248102962.

The spelling of 16664383 in words is "sixteen million, six hundred sixty-four thousand, three hundred eighty-three".