68450789 has 24 divisors (see below), whose sum is σ = 80668224. Its totient is φ = 57833600.

The previous prime is 68450779. The next prime is 68450791. The reversal of 68450789 is 98705486.

It is not a de Polignac number, because 68450789 - 2⁸ = 68450533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68450779) 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 23 ways as a sum of consecutive naturals, for example, 219944 + ... + 220254.

It is an arithmetic number, because the mean of its divisors is an integer number (3361176).

Almost surely, 2^68450789 is an apocalyptic number.

It is an amenable number.

68450789 is a deficient number, since it is larger than the sum of its proper divisors (12217435).

68450789 is a wasteful number, since it uses less digits than its factorization.

68450789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 68450789 is about 8273.4991992506. The cubic root of 68450789 is about 409.0654681657.

The spelling of 68450789 in words is "sixty-eight million, four hundred fifty thousand, seven hundred eighty-nine".