16687108 has 6 divisors (see below), whose sum is σ = 29202446. Its totient is φ = 8343552.

The previous prime is 16687079. The next prime is 16687117. The reversal of 16687108 is 80178661.

It can be written as a sum of positive squares in only one way, i.e., 14152644 + 2534464 = 3762^2 + 1592^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2085885 + ... + 2085892.

Almost surely, 2^16687108 is an apocalyptic number.

It is an amenable number.

16687108 is a deficient number, since it is larger than the sum of its proper divisors (12515338).

16687108 is a wasteful number, since it uses less digits than its factorization.

16687108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171781 (or 4171779 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 16687108 is about 4084.9856792895. The cubic root of 16687108 is about 255.5408640438.

The spelling of 16687108 in words is "sixteen million, six hundred eighty-seven thousand, one hundred eight".