68858 has 4 divisors (see below), whose sum is σ = 103290. Its totient is φ = 34428.

The previous prime is 68821. The next prime is 68863. The reversal of 68858 is 85886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85886 = 2 ⋅42943.

It can be written as a sum of positive squares in only one way, i.e., 66049 + 2809 = 257^2 + 53^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 68858.

It is an unprimeable number.

68858 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17213 + ... + 17216.

2⁶⁸⁸⁵⁸ is an apocalyptic number.

68858 is a deficient number, since it is larger than the sum of its proper divisors (34432).

68858 is a wasteful number, since it uses less digits than its factorization.

68858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34431.

The product of its digits is 15360, while the sum is 35.

The square root of 68858 is about 262.4080791439. The cubic root of 68858 is about 40.9875036277.

The spelling of 68858 in words is "sixty-eight thousand, eight hundred fifty-eight".