16317805 has 16 divisors (see below), whose sum is σ = 22748544. Its totient is φ = 11004480.

The previous prime is 16317797. The next prime is 16317839. The reversal of 16317805 is 50871361.

It is not a de Polignac number, because 16317805 - 2³ = 16317797 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 1687 + ... + 5956.

It is an arithmetic number, because the mean of its divisors is an integer number (1421784).

Almost surely, 2^16317805 is an apocalyptic number.

It is an amenable number.

16317805 is a deficient number, since it is larger than the sum of its proper divisors (6430739).

16317805 is an equidigital number, since it uses as much as digits as its factorization.

16317805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 16317805 is about 4039.5302944773. The cubic root of 16317805 is about 253.6416558020.

The spelling of 16317805 in words is "sixteen million, three hundred seventeen thousand, eight hundred five".