68779 has 4 divisors (see below), whose sum is σ = 69520. Its totient is φ = 68040.

The previous prime is 68777. The next prime is 68791. The reversal of 68779 is 97786.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68779 - 2¹ = 68777 is a prime.

It is a Duffinian number.

68779 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (68771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207 + ... + 424.

It is an arithmetic number, because the mean of its divisors is an integer number (17380).

2⁶⁸⁷⁷⁹ is an apocalyptic number.

68779 is a deficient number, since it is larger than the sum of its proper divisors (741).

68779 is a wasteful number, since it uses less digits than its factorization.

68779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its digits is 21168, while the sum is 37.

The square root of 68779 is about 262.2575070422. The cubic root of 68779 is about 40.9718227971.

It can be divided in two parts, 6877 and 9, that added together give a palindrome (6886).

The spelling of 68779 in words is "sixty-eight thousand, seven hundred seventy-nine".