68785 has 4 divisors (see below), whose sum is σ = 82548. Its totient is φ = 55024.

The previous prime is 68777. The next prime is 68791. The reversal of 68785 is 58786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11664 + 57121 = 108^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 68785 - 2³ = 68777 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 68785.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6874 + ... + 6883.

It is an arithmetic number, because the mean of its divisors is an integer number (20637).

2⁶⁸⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

68785 is a deficient number, since it is larger than the sum of its proper divisors (13763).

68785 is a wasteful number, since it uses less digits than its factorization.

68785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13762.

The product of its digits is 13440, while the sum is 34.

The square root of 68785 is about 262.2689459315. The cubic root of 68785 is about 40.9730141675.

Subtracting from 68785 its reverse (58786), we obtain a palindrome (9999).

The spelling of 68785 in words is "sixty-eight thousand, seven hundred eighty-five".