16872665 has 16 divisors (see below), whose sum is σ = 21544320. Its totient is φ = 12648960.

The previous prime is 16872659. The next prime is 16872679. The reversal of 16872665 is 56627861.

It is not a de Polignac number, because 16872665 - 2⁶ = 16872601 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8300 + ... + 10130.

It is an arithmetic number, because the mean of its divisors is an integer number (1346520).

Almost surely, 2^16872665 is an apocalyptic number.

It is an amenable number.

16872665 is a deficient number, since it is larger than the sum of its proper divisors (4671655).

16872665 is a wasteful number, since it uses less digits than its factorization.

16872665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952.

The product of its digits is 120960, while the sum is 41.

The square root of 16872665 is about 4107.6349643073. The cubic root of 16872665 is about 256.4845609555.

The spelling of 16872665 in words is "sixteen million, eight hundred seventy-two thousand, six hundred sixty-five".