68143171 has 4 divisors (see below), whose sum is σ = 69298200. Its totient is φ = 66988144.

The previous prime is 68143169. The next prime is 68143193. The reversal of 68143171 is 17134186.

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 68143171 - 2¹ = 68143169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68143111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577426 + ... + 577543.

It is an arithmetic number, because the mean of its divisors is an integer number (17324550).

Almost surely, 2^68143171 is an apocalyptic number.

68143171 is a deficient number, since it is larger than the sum of its proper divisors (1155029).

68143171 is a wasteful number, since it uses less digits than its factorization.

68143171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155028.

The product of its digits is 4032, while the sum is 31.

The square root of 68143171 is about 8254.8877036578. The cubic root of 68143171 is about 408.4517675430.

The spelling of 68143171 in words is "sixty-eight million, one hundred forty-three thousand, one hundred seventy-one".