16671887 has 8 divisors (see below), whose sum is σ = 17112000. Its totient is φ = 16235424.

The previous prime is 16671841. The next prime is 16671899. The reversal of 16671887 is 78817661.

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 16671887 - 2⁸ = 16671631 is a prime.

It is a super-2 number, since 2×16671887² = 555903632281538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16671827) 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, 9989 + ... + 11537.

It is an arithmetic number, because the mean of its divisors is an integer number (2139000).

Almost surely, 2^16671887 is an apocalyptic number.

16671887 is a deficient number, since it is larger than the sum of its proper divisors (440113).

16671887 is a wasteful number, since it uses less digits than its factorization.

16671887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825.

The product of its digits is 112896, while the sum is 44.

The square root of 16671887 is about 4083.1222122293. The cubic root of 16671887 is about 255.4631439517.

The spelling of 16671887 in words is "sixteen million, six hundred seventy-one thousand, eight hundred eighty-seven".