16872687 has 36 divisors (see below), whose sum is σ = 27937000. Its totient is φ = 9752832.

The previous prime is 16872679. The next prime is 16872697. The reversal of 16872687 is 78627861.

It is not a de Polignac number, because 16872687 - 2³ = 16872679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16872617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33564 + ... + 34062.

Almost surely, 2^16872687 is an apocalyptic number.

16872687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16872687 is a deficient number, since it is larger than the sum of its proper divisors (11064313).

16872687 is a wasteful number, since it uses less digits than its factorization.

16872687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 532 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 16872687 is about 4107.6376422465. The cubic root of 16872687 is about 256.4846724309.

The spelling of 16872687 in words is "sixteen million, eight hundred seventy-two thousand, six hundred eighty-seven".