68915 has 16 divisors (see below), whose sum is σ = 103680. Its totient is φ = 42720.

The previous prime is 68909. The next prime is 68917. The reversal of 68915 is 51986.

It is not a de Polignac number, because 68915 - 2⁴ = 68899 is a prime.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296 + ... + 474.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

2⁶⁸⁹¹⁵ is an apocalyptic number.

68915 is a deficient number, since it is larger than the sum of its proper divisors (34765).

68915 is a wasteful number, since it uses less digits than its factorization.

68915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202.

The product of its digits is 2160, while the sum is 29.

The square root of 68915 is about 262.5166661376. The cubic root of 68915 is about 40.9988101975.

Subtracting from 68915 its sum of digits (29), we obtain a palindrome (68886).

The spelling of 68915 in words is "sixty-eight thousand, nine hundred fifteen".