16105666 has 8 divisors (see below), whose sum is σ = 24255504. Its totient is φ = 8020500.

The previous prime is 16105637. The next prime is 16105669. The reversal of 16105666 is 66650161.

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

It is not an unprimeable number, because it can be changed into a prime (16105669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15540 + ... + 16543.

It is an arithmetic number, because the mean of its divisors is an integer number (3031938).

Almost surely, 2^16105666 is an apocalyptic number.

16105666 is a deficient number, since it is larger than the sum of its proper divisors (8149838).

16105666 is a wasteful number, since it uses less digits than its factorization.

16105666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32336.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 16105666 is about 4013.1865144795. The cubic root of 16105666 is about 252.5377050513.

The spelling of 16105666 in words is "sixteen million, one hundred five thousand, six hundred sixty-six".