16200689 has 4 divisors (see below), whose sum is σ = 16283124. Its totient is φ = 16118256.

The previous prime is 16200641. The next prime is 16200713. The reversal of 16200689 is 98600261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15864289 + 336400 = 3983^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 16200689 - 2⁸ = 16200433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16200629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40922 + ... + 41315.

It is an arithmetic number, because the mean of its divisors is an integer number (4070781).

Almost surely, 2^16200689 is an apocalyptic number.

It is an amenable number.

16200689 is a deficient number, since it is larger than the sum of its proper divisors (82435).

16200689 is an equidigital number, since it uses as much as digits as its factorization.

16200689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82434.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 16200689 is about 4025.0079503027. The cubic root of 16200689 is about 253.0333867317.

The spelling of 16200689 in words is "sixteen million, two hundred thousand, six hundred eighty-nine".