68047449 has 12 divisors (see below), whose sum is σ = 93755088. Its totient is φ = 43899720.

The previous prime is 68047439. The next prime is 68047451. The reversal of 68047449 is 94474086.

It is not a de Polignac number, because 68047449 - 2⁷ = 68047321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68047449.

It is not an unprimeable number, because it can be changed into a prime (68047429) 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, 8919 + ... + 14684.

It is an arithmetic number, because the mean of its divisors is an integer number (7812924).

Almost surely, 2^68047449 is an apocalyptic number.

It is an amenable number.

68047449 is a deficient number, since it is larger than the sum of its proper divisors (25707639).

68047449 is a wasteful number, since it uses less digits than its factorization.

68047449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23668 (or 23637 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 68047449 is about 8249.0877677474. The cubic root of 68047449 is about 408.2604246152.

The spelling of 68047449 in words is "sixty-eight million, forty-seven thousand, four hundred forty-nine".