16886693 has 4 divisors (see below), whose sum is σ = 17008320. Its totient is φ = 16765068.

The previous prime is 16886657. The next prime is 16886707. The reversal of 16886693 is 39668861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39668861 = 101 ⋅392761.

It is not a de Polignac number, because 16886693 - 2¹² = 16882597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16886603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60605 + ... + 60882.

It is an arithmetic number, because the mean of its divisors is an integer number (4252080).

Almost surely, 2^16886693 is an apocalyptic number.

It is an amenable number.

16886693 is a deficient number, since it is larger than the sum of its proper divisors (121627).

16886693 is a wasteful number, since it uses less digits than its factorization.

16886693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121626.

The product of its digits is 373248, while the sum is 47.

The square root of 16886693 is about 4109.3421614657. The cubic root of 16886693 is about 256.5556220231. Note that the first 3 decimals are identical.

The spelling of 16886693 in words is "sixteen million, eight hundred eighty-six thousand, six hundred ninety-three".