2689723 has 12 divisors (see below), whose sum is σ = 2939832. Its totient is φ = 2458880.

The previous prime is 2689717. The next prime is 2689727. The reversal of 2689723 is 3279862.

2689723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2689723 - 2⁵ = 2689691 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 6⁶ + 8² + 9² + 7 + 2²⁰ + 3¹³ .

It is a Duffinian number.

2689723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2689727) 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 11 ways as a sum of consecutive naturals, for example, 11736 + ... + 11962.

It is an arithmetic number, because the mean of its divisors is an integer number (244986).

2^2689723 is an apocalyptic number.

2689723 is a deficient number, since it is larger than the sum of its proper divisors (250109).

2689723 is a wasteful number, since it uses less digits than its factorization.

2689723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 285 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 2689723 is about 1640.0374995713. The cubic root of 2689723 is about 139.0707677532.

It can be divided in two parts, 2 and 689723, that added together give a triangular number (689725 = T₁₁₇₄).

The spelling of 2689723 in words is "two million, six hundred eighty-nine thousand, seven hundred twenty-three".