16568923 has 4 divisors (see below), whose sum is σ = 18935920. Its totient is φ = 14201928.

The previous prime is 16568891. The next prime is 16568941. The reversal of 16568923 is 32986561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32986561 = 109 ⋅302629.

It is a cyclic number.

It is not a de Polignac number, because 16568923 - 2⁵ = 16568891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16568953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183488 + ... + 1183501.

It is an arithmetic number, because the mean of its divisors is an integer number (4733980).

Almost surely, 2^16568923 is an apocalyptic number.

16568923 is a deficient number, since it is larger than the sum of its proper divisors (2366997).

16568923 is an equidigital number, since it uses as much as digits as its factorization.

16568923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366996.

The product of its digits is 77760, while the sum is 40.

The square root of 16568923 is about 4070.4941960406. The cubic root of 16568923 is about 254.9361521553.

The spelling of 16568923 in words is "sixteen million, five hundred sixty-eight thousand, nine hundred twenty-three".