68871871 has 2 divisors, whose sum is σ = 68871872. Its totient is φ = 68871870.

The previous prime is 68871833. The next prime is 68871889. The reversal of 68871871 is 17817886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68871871 - 2¹⁷ = 68740799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68871071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34435935 + 34435936.

It is an arithmetic number, because the mean of its divisors is an integer number (34435936).

Almost surely, 2^68871871 is an apocalyptic number.

68871871 is a deficient number, since it is larger than the sum of its proper divisors (1).

68871871 is an equidigital number, since it uses as much as digits as its factorization.

68871871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 46.

The square root of 68871871 is about 8298.9078197074. The cubic root of 68871871 is about 409.9025566564.

The spelling of 68871871 in words is "sixty-eight million, eight hundred seventy-one thousand, eight hundred seventy-one".