68518845 has 32 divisors (see below), whose sum is σ = 128227200. Its totient is φ = 34618752.

The previous prime is 68518837. The next prime is 68518847. The reversal of 68518845 is 54881586.

It is not a de Polignac number, because 68518845 - 2³ = 68518837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68518845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68518847) 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 31 ways as a sum of consecutive naturals, for example, 10792 + ... + 15921.

It is an arithmetic number, because the mean of its divisors is an integer number (4007100).

Almost surely, 2^68518845 is an apocalyptic number.

It is an amenable number.

68518845 is a deficient number, since it is larger than the sum of its proper divisors (59708355).

68518845 is a wasteful number, since it uses less digits than its factorization.

68518845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26746 (or 26740 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 68518845 is about 8277.6110684182. The cubic root of 68518845 is about 409.2009919911.

The spelling of 68518845 in words is "sixty-eight million, five hundred eighteen thousand, eight hundred forty-five".