16617109 has 8 divisors (see below), whose sum is σ = 18360000. Its totient is φ = 14959296.

The previous prime is 16617103. The next prime is 16617113. The reversal of 16617109 is 90171661.

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 16617109 - 2⁹ = 16616597 is a prime.

It is a super-2 number, since 2×16617109² = 552256623035762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16617103) 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, 20859 + ... + 21640.

It is an arithmetic number, because the mean of its divisors is an integer number (2295000).

Almost surely, 2^16617109 is an apocalyptic number.

It is an amenable number.

16617109 is a deficient number, since it is larger than the sum of its proper divisors (1742891).

16617109 is a wasteful number, since it uses less digits than its factorization.

16617109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42539.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 16617109 is about 4076.4088362185. The cubic root of 16617109 is about 255.1830493961.

The spelling of 16617109 in words is "sixteen million, six hundred seventeen thousand, one hundred nine".