68053985 has 8 divisors (see below), whose sum is σ = 81957096. Its totient is φ = 54248320.

The previous prime is 68053969. The next prime is 68054011. The reversal of 68053985 is 58935086.

It can be written as a sum of positive squares in 4 ways, for example, as 8579041 + 59474944 = 2929^2 + 7712^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68053985 - 2⁴ = 68053969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22814 + ... + 25623.

It is an arithmetic number, because the mean of its divisors is an integer number (10244637).

Almost surely, 2^68053985 is an apocalyptic number.

It is an amenable number.

68053985 is a deficient number, since it is larger than the sum of its proper divisors (13903111).

68053985 is a wasteful number, since it uses less digits than its factorization.

68053985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48723.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 68053985 is about 8249.4839232524. The cubic root of 68053985 is about 408.2734954197.

The spelling of 68053985 in words is "sixty-eight million, fifty-three thousand, nine hundred eighty-five".