16318705 has 8 divisors (see below), whose sum is σ = 21088872. Its totient is φ = 12050688.

The previous prime is 16318703. The next prime is 16318733. The reversal of 16318705 is 50781361.

It can be written as a sum of positive squares in 4 ways, for example, as 2211169 + 14107536 = 1487^2 + 3756^2 .

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

It is not a de Polignac number, because 16318705 - 2¹ = 16318703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16318703) 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 7 ways as a sum of consecutive naturals, for example, 125464 + ... + 125593.

It is an arithmetic number, because the mean of its divisors is an integer number (2636109).

Almost surely, 2^16318705 is an apocalyptic number.

It is an amenable number.

16318705 is a deficient number, since it is larger than the sum of its proper divisors (4770167).

16318705 is a wasteful number, since it uses less digits than its factorization.

16318705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251075.

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

The square root of 16318705 is about 4039.6416920316. The cubic root of 16318705 is about 253.6463188739.

The spelling of 16318705 in words is "sixteen million, three hundred eighteen thousand, seven hundred five".