16105663 has 6 divisors (see below), whose sum is σ = 18735216. Its totient is φ = 13804812.

The previous prime is 16105637. The next prime is 16105669. The reversal of 16105663 is 36650161.

It is a de Polignac number, because none of the positive numbers 2^k-16105663 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164295 + ... + 164392.

It is an arithmetic number, because the mean of its divisors is an integer number (3122536).

Almost surely, 2^16105663 is an apocalyptic number.

16105663 is a deficient number, since it is larger than the sum of its proper divisors (2629553).

16105663 is an equidigital number, since it uses as much as digits as its factorization.

16105663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328701 (or 328694 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 16105663 is about 4013.1861407116. The cubic root of 16105663 is about 252.5376893712.

The spelling of 16105663 in words is "sixteen million, one hundred five thousand, six hundred sixty-three".