16385623 has 4 divisors (see below), whose sum is σ = 16766728. Its totient is φ = 16004520.

The previous prime is 16385617. The next prime is 16385647. The reversal of 16385623 is 32658361.

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 16385623 - 2⁹ = 16385111 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 (16385423) 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, 190488 + ... + 190573.

It is an arithmetic number, because the mean of its divisors is an integer number (4191682).

Almost surely, 2^16385623 is an apocalyptic number.

16385623 is a deficient number, since it is larger than the sum of its proper divisors (381105).

16385623 is an equidigital number, since it uses as much as digits as its factorization.

16385623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381104.

The product of its digits is 25920, while the sum is 34.

The square root of 16385623 is about 4047.9158835134. The cubic root of 16385623 is about 253.9925546002.

The spelling of 16385623 in words is "sixteen million, three hundred eighty-five thousand, six hundred twenty-three".