2689345 has 8 divisors (see below), whose sum is σ = 3314664. Its totient is φ = 2093184.

The previous prime is 2689339. The next prime is 2689361. The reversal of 2689345 is 5439862.

It can be written as a sum of positive squares in 4 ways, for example, as 430336 + 2259009 = 656^2 + 1503^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2689345 - 2¹⁹ = 2165057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a d-powerful number, because it can be written as 2¹¹ + 6⁵ + 8⁵ + 9³ + 3¹³ + 4¹⁰ + 5⁵ .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7084 + ... + 7453.

It is an arithmetic number, because the mean of its divisors is an integer number (414333).

2^2689345 is an apocalyptic number.

It is an amenable number.

2689345 is a deficient number, since it is larger than the sum of its proper divisors (625319).

2689345 is a wasteful number, since it uses less digits than its factorization.

2689345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14579.

The product of its digits is 51840, while the sum is 37.

The square root of 2689345 is about 1639.9222542548. The cubic root of 2689345 is about 139.0642526817.

The spelling of 2689345 in words is "two million, six hundred eighty-nine thousand, three hundred forty-five".