68886871 has 4 divisors (see below), whose sum is σ = 69382600. Its totient is φ = 68391144.

The previous prime is 68886841. The next prime is 68886889. The reversal of 68886871 is 17868886.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68886871 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 (68886841) 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, 247656 + ... + 247933.

It is an arithmetic number, because the mean of its divisors is an integer number (17345650).

Almost surely, 2^68886871 is an apocalyptic number.

68886871 is a deficient number, since it is larger than the sum of its proper divisors (495729).

68886871 is a wasteful number, since it uses less digits than its factorization.

68886871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495728.

The product of its digits is 1032192, while the sum is 52.

The square root of 68886871 is about 8299.8115038837. The cubic root of 68886871 is about 409.9323128396.

The spelling of 68886871 in words is "sixty-eight million, eight hundred eighty-six thousand, eight hundred seventy-one".