16117687 has 8 divisors (see below), whose sum is σ = 17023104. Its totient is φ = 15229368.

The previous prime is 16117667. The next prime is 16117693. The reversal of 16117687 is 78671161.

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 16117687 - 2¹¹ = 16115639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16117667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2313 + ... + 6130.

It is an arithmetic number, because the mean of its divisors is an integer number (2127888).

Almost surely, 2^16117687 is an apocalyptic number.

16117687 is a deficient number, since it is larger than the sum of its proper divisors (905417).

16117687 is an equidigital number, since it uses as much as digits as its factorization.

16117687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8549.

The product of its digits is 14112, while the sum is 37.

The square root of 16117687 is about 4014.6839228014. The cubic root of 16117687 is about 252.6005194005.

The spelling of 16117687 in words is "sixteen million, one hundred seventeen thousand, six hundred eighty-seven".