2399668 has 12 divisors (see below), whose sum is σ = 4237380. Its totient is φ = 1188992.

The previous prime is 2399653. The next prime is 2399671. The reversal of 2399668 is 8669932.

2399668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21904 + 2377764 = 148^2 + 1542^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2203 + ... + 3106.

It is an arithmetic number, because the mean of its divisors is an integer number (353115).

2^2399668 is an apocalyptic number.

It is an amenable number.

2399668 is a deficient number, since it is larger than the sum of its proper divisors (1837712).

2399668 is a wasteful number, since it uses less digits than its factorization.

2399668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5426 (or 5424 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 2399668 is about 1549.0861822378. The cubic root of 2399668 is about 133.8804160723.

The spelling of 2399668 in words is "two million, three hundred ninety-nine thousand, six hundred sixty-eight".