68208143 has 4 divisors (see below), whose sum is σ = 68300688. Its totient is φ = 68115600.

The previous prime is 68208103. The next prime is 68208149. The reversal of 68208143 is 34180286.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68208143 - 2⁶ = 68208079 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 (68208149) 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, 45158 + ... + 46643.

It is an arithmetic number, because the mean of its divisors is an integer number (17075172).

Almost surely, 2^68208143 is an apocalyptic number.

68208143 is a deficient number, since it is larger than the sum of its proper divisors (92545).

68208143 is an equidigital number, since it uses as much as digits as its factorization.

68208143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92544.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 68208143 is about 8258.8221315149. The cubic root of 68208143 is about 408.5815408718.

The spelling of 68208143 in words is "sixty-eight million, two hundred eight thousand, one hundred forty-three".