16585663 has 2 divisors, whose sum is σ = 16585664. Its totient is φ = 16585662.

The previous prime is 16585633. The next prime is 16585669. The reversal of 16585663 is 36658561.

It is a strong prime.

It is an emirp because it is prime and its reverse (36658561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16585663 - 2¹³ = 16577471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16585669) 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 as a sum of consecutive naturals, namely, 8292831 + 8292832.

It is an arithmetic number, because the mean of its divisors is an integer number (8292832).

Almost surely, 2^16585663 is an apocalyptic number.

16585663 is a deficient number, since it is larger than the sum of its proper divisors (1).

16585663 is an equidigital number, since it uses as much as digits as its factorization.

16585663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 16585663 is about 4072.5499383065. The cubic root of 16585663 is about 255.0219793947.

The spelling of 16585663 in words is "sixteen million, five hundred eighty-five thousand, six hundred sixty-three".