16564073 has 8 divisors (see below), whose sum is σ = 17239200. Its totient is φ = 15902208.

The previous prime is 16564063. The next prime is 16564099. The reversal of 16564073 is 37046561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16564073 - 2²⁰ = 15515497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16564043) 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 7 ways as a sum of consecutive naturals, for example, 728 + ... + 5801.

It is an arithmetic number, because the mean of its divisors is an integer number (2154900).

Almost surely, 2^16564073 is an apocalyptic number.

It is an amenable number.

16564073 is a deficient number, since it is larger than the sum of its proper divisors (675127).

16564073 is an equidigital number, since it uses as much as digits as its factorization.

16564073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 16564073 is about 4069.8984016803. The cubic root of 16564073 is about 254.9112750405.

The spelling of 16564073 in words is "sixteen million, five hundred sixty-four thousand, seventy-three".