68656271 has 4 divisors (see below), whose sum is σ = 68674872. Its totient is φ = 68637672.

The previous prime is 68656267. The next prime is 68656283. The reversal of 68656271 is 17265686.

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 68656271 - 2² = 68656267 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 (68656241) 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, 1685 + ... + 11838.

It is an arithmetic number, because the mean of its divisors is an integer number (17168718).

Almost surely, 2^68656271 is an apocalyptic number.

68656271 is a deficient number, since it is larger than the sum of its proper divisors (18601).

68656271 is a wasteful number, since it uses less digits than its factorization.

68656271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18600.

The product of its digits is 120960, while the sum is 41.

The square root of 68656271 is about 8285.9079768001. The cubic root of 68656271 is about 409.4743829647.

The spelling of 68656271 in words is "sixty-eight million, six hundred fifty-six thousand, two hundred seventy-one".