16688099 has 8 divisors (see below), whose sum is σ = 17671440. Its totient is φ = 15715296.

The previous prime is 16688093. The next prime is 16688117. The reversal of 16688099 is 99088661.

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 16688099 - 2⁸ = 16687843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16688093) 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, 749 + ... + 5825.

It is an arithmetic number, because the mean of its divisors is an integer number (2208930).

Almost surely, 2^16688099 is an apocalyptic number.

16688099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16688099 is a deficient number, since it is larger than the sum of its proper divisors (983341).

16688099 is a wasteful number, since it uses less digits than its factorization.

16688099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5269.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 16688099 is about 4085.1069753435. The cubic root of 16688099 is about 255.5459225593.

The spelling of 16688099 in words is "sixteen million, six hundred eighty-eight thousand, ninety-nine".