68684911 has 4 divisors (see below), whose sum is σ = 68759152. Its totient is φ = 68610672.

The previous prime is 68684857. The next prime is 68684939. The reversal of 68684911 is 11948686.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11948686 = 2 ⋅5974343.

It is a cyclic number.

It is not a de Polignac number, because 68684911 - 2¹⁷ = 68553839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68684951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35715 + ... + 37588.

It is an arithmetic number, because the mean of its divisors is an integer number (17189788).

Almost surely, 2^68684911 is an apocalyptic number.

68684911 is a deficient number, since it is larger than the sum of its proper divisors (74241).

68684911 is an equidigital number, since it uses as much as digits as its factorization.

68684911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74240.

The product of its digits is 82944, while the sum is 43.

The square root of 68684911 is about 8287.6360320661. The cubic root of 68684911 is about 409.5313125350.

The spelling of 68684911 in words is "sixty-eight million, six hundred eighty-four thousand, nine hundred eleven".