2668449 has 16 divisors (see below), whose sum is σ = 4198400. Its totient is φ = 1475280.

The previous prime is 2668433. The next prime is 2668453. The reversal of 2668449 is 9448662.

2668449 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 2668449 - 2⁴ = 2668433 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6³ + 6⁶ + 8⁷ + 4³ + 4³ + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668459) 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 15 ways as a sum of consecutive naturals, for example, 1399 + ... + 2700.

It is an arithmetic number, because the mean of its divisors is an integer number (262400).

2^2668449 is an apocalyptic number.

It is an amenable number.

2668449 is a deficient number, since it is larger than the sum of its proper divisors (1529951).

2668449 is a wasteful number, since it uses less digits than its factorization.

2668449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140.

The product of its digits is 82944, while the sum is 39.

The square root of 2668449 is about 1633.5387966008. The cubic root of 2668449 is about 138.7031430123.

The spelling of 2668449 in words is "two million, six hundred sixty-eight thousand, four hundred forty-nine".