16564074 has 16 divisors (see below), whose sum is σ = 33368160. Its totient is φ = 5481360.

The previous prime is 16564063. The next prime is 16564099. The reversal of 16564074 is 47046561.

It is a Curzon number.

It is an unprimeable number.

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, 9097 + ... + 10764.

It is an arithmetic number, because the mean of its divisors is an integer number (2085510).

Almost surely, 2^16564074 is an apocalyptic number.

16564074 is an abundant number, since it is smaller than the sum of its proper divisors (16804086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16564074 is a wasteful number, since it uses less digits than its factorization.

16564074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20005.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 16564074 is about 4069.8985245335. The cubic root of 16564074 is about 254.9112801703.

The spelling of 16564074 in words is "sixteen million, five hundred sixty-four thousand, seventy-four".