2668349 has 4 divisors (see below), whose sum is σ = 2687964. Its totient is φ = 2648736.

The previous prime is 2668343. The next prime is 2668357. The reversal of 2668349 is 9438662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9438662 = 2 ⋅4719331.

It can be written as a sum of positive squares in 2 ways, for example, as 1737124 + 931225 = 1318^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2668349 - 2⁴ = 2668333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9602 + ... + 9875.

It is an arithmetic number, because the mean of its divisors is an integer number (671991).

2^2668349 is an apocalyptic number.

It is an amenable number.

2668349 is a deficient number, since it is larger than the sum of its proper divisors (19615).

2668349 is a wasteful number, since it uses less digits than its factorization.

2668349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19614.

The product of its digits is 62208, while the sum is 38.

The square root of 2668349 is about 1633.5081879195. The cubic root of 2668349 is about 138.7014103594.

The spelling of 2668349 in words is "two million, six hundred sixty-eight thousand, three hundred forty-nine".