16565066 has 16 divisors (see below), whose sum is σ = 29090880. Its totient is φ = 6925920.

The previous prime is 16565053. The next prime is 16565069. The reversal of 16565066 is 66056561.

It is not an unprimeable number, because it can be changed into a prime (16565069) 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, 13856 + ... + 15003.

It is an arithmetic number, because the mean of its divisors is an integer number (1818180).

Almost surely, 2^16565066 is an apocalyptic number.

16565066 is a deficient number, since it is larger than the sum of its proper divisors (12525814).

16565066 is a wasteful number, since it uses less digits than its factorization.

16565066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28909.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 16565066 is about 4070.0203930693. The cubic root of 16565066 is about 254.9163688327.

The spelling of 16565066 in words is "sixteen million, five hundred sixty-five thousand, sixty-six".