16566422 has 16 divisors (see below), whose sum is σ = 25446960. Its totient is φ = 8085792.

The previous prime is 16566409. The next prime is 16566427. The reversal of 16566422 is 22466561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16566427) 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 7 ways as a sum of consecutive naturals, for example, 39329 + ... + 39747.

It is an arithmetic number, because the mean of its divisors is an integer number (1590435).

Almost surely, 2^16566422 is an apocalyptic number.

16566422 is a deficient number, since it is larger than the sum of its proper divisors (8880538).

16566422 is a wasteful number, since it uses less digits than its factorization.

16566422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

The product of its digits is 17280, while the sum is 32.

The square root of 16566422 is about 4070.1869735922. The cubic root of 16566422 is about 254.9233243773.

The spelling of 16566422 in words is "sixteen million, five hundred sixty-six thousand, four hundred twenty-two".