68158271 has 4 divisors (see below), whose sum is σ = 68228592. Its totient is φ = 68087952.

The previous prime is 68158267. The next prime is 68158283. The reversal of 68158271 is 17285186.

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 68158271 - 2² = 68158267 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 (68158201) 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, 33686 + ... + 35651.

It is an arithmetic number, because the mean of its divisors is an integer number (17057148).

Almost surely, 2^68158271 is an apocalyptic number.

68158271 is a deficient number, since it is larger than the sum of its proper divisors (70321).

68158271 is an equidigital number, since it uses as much as digits as its factorization.

68158271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70320.

The product of its digits is 26880, while the sum is 38.

The square root of 68158271 is about 8255.8022626514. The cubic root of 68158271 is about 408.4819352331.

The spelling of 68158271 in words is "sixty-eight million, one hundred fifty-eight thousand, two hundred seventy-one".