68143 has 4 divisors (see below), whose sum is σ = 69048. Its totient is φ = 67240.

The previous prime is 68141. The next prime is 68147. The reversal of 68143 is 34186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34186 = 2 ⋅17093.

It is a cyclic number.

It is not a de Polignac number, because 68143 - 2¹ = 68141 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68141) 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, 328 + ... + 493.

It is an arithmetic number, because the mean of its divisors is an integer number (17262).

2⁶⁸¹⁴³ is an apocalyptic number.

68143 is a deficient number, since it is larger than the sum of its proper divisors (905).

68143 is an equidigital number, since it uses as much as digits as its factorization.

68143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904.

The product of its digits is 576, while the sum is 22.

The square root of 68143 is about 261.0421421916. The cubic root of 68143 is about 40.8451425883.

Subtracting from 68143 its sum of digits (22), we obtain a square (68121 = 261²).

The spelling of 68143 in words is "sixty-eight thousand, one hundred forty-three".