16887601 has 6 divisors (see below), whose sum is σ = 17127510. Its totient is φ = 16651008.

The previous prime is 16887583. The next prime is 16887623. The reversal of 16887601 is 10678861.

It can be written as a sum of positive squares in 3 ways, for example, as 5997601 + 10890000 = 2449^2 + 3300^2 .

It is not a de Polignac number, because 16887601 - 2⁵ = 16887569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16887701) 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 in 5 ways as a sum of consecutive naturals, for example, 3745 + ... + 6913.

It is an arithmetic number, because the mean of its divisors is an integer number (2854585).

Almost surely, 2^16887601 is an apocalyptic number.

It is an amenable number.

16887601 is a deficient number, since it is larger than the sum of its proper divisors (239909).

16887601 is an frugal number, since it uses more digits than its factorization.

16887601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315 (or 3242 counting only the distinct ones).

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

The square root of 16887601 is about 4109.4526399510. The cubic root of 16887601 is about 256.5602202853.

The spelling of 16887601 in words is "sixteen million, eight hundred eighty-seven thousand, six hundred one".