2705689 has 16 divisors (see below), whose sum is σ = 3231360. Its totient is φ = 2217600.

The previous prime is 2705687. The next prime is 2705693. The reversal of 2705689 is 9865072.

It is not a de Polignac number, because 2705689 - 2¹ = 2705687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2705687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26739 + ... + 26839.

It is an arithmetic number, because the mean of its divisors is an integer number (201960).

2^2705689 is an apocalyptic number.

It is an amenable number.

2705689 is a deficient number, since it is larger than the sum of its proper divisors (525671).

2705689 is a wasteful number, since it uses less digits than its factorization.

2705689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2705689 is about 1644.8978691700. The cubic root of 2705689 is about 139.3453963951.

The spelling of 2705689 in words is "two million, seven hundred five thousand, six hundred eighty-nine".