16317649 has 8 divisors (see below), whose sum is σ = 17282880. Its totient is φ = 15373776.

The previous prime is 16317647. The next prime is 16317667. The reversal of 16317649 is 94671361.

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

It is a cyclic number.

It is not a de Polignac number, because 16317649 - 2¹ = 16317647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16317641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3754 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (2160360).

Almost surely, 2^16317649 is an apocalyptic number.

It is an amenable number.

16317649 is a deficient number, since it is larger than the sum of its proper divisors (965231).

16317649 is a wasteful number, since it uses less digits than its factorization.

16317649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10679.

The product of its digits is 27216, while the sum is 37.

The square root of 16317649 is about 4039.5109852555. The cubic root of 16317649 is about 253.6408475188.

The spelling of 16317649 in words is "sixteen million, three hundred seventeen thousand, six hundred forty-nine".