16703987 has 4 divisors (see below), whose sum is σ = 16713240. Its totient is φ = 16694736.

The previous prime is 16703977. The next prime is 16703989. The reversal of 16703987 is 78930761.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16703987 - 2¹⁴ = 16687603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16703989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938 + ... + 5855.

It is an arithmetic number, because the mean of its divisors is an integer number (4178310).

Almost surely, 2^16703987 is an apocalyptic number.

16703987 is a deficient number, since it is larger than the sum of its proper divisors (9253).

16703987 is an equidigital number, since it uses as much as digits as its factorization.

16703987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9252.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 16703987 is about 4087.0511374339. The cubic root of 16703987 is about 255.6269948215.

The spelling of 16703987 in words is "sixteen million, seven hundred three thousand, nine hundred eighty-seven".