16871669 has 2 divisors, whose sum is σ = 16871670. Its totient is φ = 16871668.

The previous prime is 16871663. The next prime is 16871711. The reversal of 16871669 is 96617861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16703569 + 168100 = 4087^2 + 410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16871669 is a prime.

It is a super-2 number, since 2×16871669² = 569306429691122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16871663) 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 as a sum of consecutive naturals, namely, 8435834 + 8435835.

It is an arithmetic number, because the mean of its divisors is an integer number (8435835).

Almost surely, 2^16871669 is an apocalyptic number.

It is an amenable number.

16871669 is a deficient number, since it is larger than the sum of its proper divisors (1).

16871669 is an equidigital number, since it uses as much as digits as its factorization.

16871669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 16871669 is about 4107.5137248706. The cubic root of 16871669 is about 256.4795140617.

The spelling of 16871669 in words is "sixteen million, eight hundred seventy-one thousand, six hundred sixty-nine".