68985785 has 16 divisors (see below), whose sum is σ = 90502272. Its totient is φ = 50064000.

The previous prime is 68985743. The next prime is 68985793. The reversal of 68985785 is 58758986.

It is not a de Polignac number, because 68985785 - 2²⁰ = 67937209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68985785.

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 15 ways as a sum of consecutive naturals, for example, 32012 + ... + 34098.

It is an arithmetic number, because the mean of its divisors is an integer number (5656392).

Almost surely, 2^68985785 is an apocalyptic number.

It is an amenable number.

68985785 is a deficient number, since it is larger than the sum of its proper divisors (21516487).

68985785 is a wasteful number, since it uses less digits than its factorization.

68985785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704.

The product of its digits is 4838400, while the sum is 56.

The square root of 68985785 is about 8305.7681763940. The cubic root of 68985785 is about 410.1284249683.

The spelling of 68985785 in words is "sixty-eight million, nine hundred eighty-five thousand, seven hundred eighty-five".