2013689 has 4 divisors (see below), whose sum is σ = 2016756. Its totient is φ = 2010624.

The previous prime is 2013679. The next prime is 2013703. The reversal of 2013689 is 9863102.

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 258064 + 1755625 = 508^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013689 - 2¹² = 2009593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2013619) 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, 104 + ... + 2009.

It is an arithmetic number, because the mean of its divisors is an integer number (504189).

2^2013689 is an apocalyptic number.

It is an amenable number.

2013689 is a deficient number, since it is larger than the sum of its proper divisors (3067).

2013689 is an equidigital number, since it uses as much as digits as its factorization.

2013689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2013689 is about 1419.0451014679. The cubic root of 2013689 is about 126.2789026400.

The spelling of 2013689 in words is "two million, thirteen thousand, six hundred eighty-nine".