2289685 has 8 divisors (see below), whose sum is σ = 2776536. Its totient is φ = 1812480.

The previous prime is 2289667. The next prime is 2289689. The reversal of 2289685 is 5869822.

It can be written as a sum of positive squares in 4 ways, for example, as 221841 + 2067844 = 471^2 + 1438^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2289685 - 2¹³ = 2281493 is a prime.

It is a Duffinian number.

2289685 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2289689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1876 + ... + 2845.

It is an arithmetic number, because the mean of its divisors is an integer number (347067).

2^2289685 is an apocalyptic number.

It is an amenable number.

2289685 is a deficient number, since it is larger than the sum of its proper divisors (486851).

2289685 is an equidigital number, since it uses as much as digits as its factorization.

2289685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823.

The product of its digits is 69120, while the sum is 40.

The square root of 2289685 is about 1513.1705125332. The cubic root of 2289685 is about 131.8029850964.

The spelling of 2289685 in words is "two million, two hundred eighty-nine thousand, six hundred eighty-five".