68543171 has 4 divisors (see below), whose sum is σ = 68581752. Its totient is φ = 68504592.

The previous prime is 68543141. The next prime is 68543177. The reversal of 68543171 is 17134586.

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 68543171 - 2⁶ = 68543107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68543177) 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, 16490 + ... + 20223.

It is an arithmetic number, because the mean of its divisors is an integer number (17145438).

Almost surely, 2^68543171 is an apocalyptic number.

68543171 is a deficient number, since it is larger than the sum of its proper divisors (38581).

68543171 is a wasteful number, since it uses less digits than its factorization.

68543171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38580.

The product of its digits is 20160, while the sum is 35.

The square root of 68543171 is about 8279.0803233209. The cubic root of 68543171 is about 409.2494119821.

The spelling of 68543171 in words is "sixty-eight million, five hundred forty-three thousand, one hundred seventy-one".