16317609 has 16 divisors (see below), whose sum is σ = 27125760. Its totient is φ = 8476560.

The previous prime is 16317593. The next prime is 16317611. The reversal of 16317609 is 90671361.

It is not a de Polignac number, because 16317609 - 2⁴ = 16317593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 16317609.

It is not an unprimeable number, because it can be changed into a prime (16317619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35089 + ... + 35550.

It is an arithmetic number, because the mean of its divisors is an integer number (1695360).

Almost surely, 2^16317609 is an apocalyptic number.

It is an amenable number.

16317609 is a deficient number, since it is larger than the sum of its proper divisors (10808151).

16317609 is a wasteful number, since it uses less digits than its factorization.

16317609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70660.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 16317609 is about 4039.5060341581. The cubic root of 16317609 is about 253.6406402658.

The spelling of 16317609 in words is "sixteen million, three hundred seventeen thousand, six hundred nine".