68913 has 24 divisors (see below), whose sum is σ = 116480. Its totient is φ = 38880.

The previous prime is 68909. The next prime is 68917. The reversal of 68913 is 31986.

It is an interprime number because it is at equal distance from previous prime (68909) and next prime (68917).

It is not a de Polignac number, because 68913 - 2² = 68909 is a prime.

It is a Curzon number.

68913 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (68917) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2208 + ... + 2238.

2⁶⁸⁹¹³ is an apocalyptic number.

It is an amenable number.

68913 is a deficient number, since it is larger than the sum of its proper divisors (47567).

68913 is a wasteful number, since it uses less digits than its factorization.

68913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 66 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 68913 is about 262.5128568280. The cubic root of 68913 is about 40.9984135813.

Subtracting from 68913 its sum of digits (27), we obtain a palindrome (68886).

The spelling of 68913 in words is "sixty-eight thousand, nine hundred thirteen".