68508871 has 2 divisors, whose sum is σ = 68508872. Its totient is φ = 68508870.

The previous prime is 68508863. The next prime is 68508877. The reversal of 68508871 is 17880586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68508871 - 2³ = 68508863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68508877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34254435 + 34254436.

It is an arithmetic number, because the mean of its divisors is an integer number (34254436).

Almost surely, 2^68508871 is an apocalyptic number.

68508871 is a deficient number, since it is larger than the sum of its proper divisors (1).

68508871 is an equidigital number, since it uses as much as digits as its factorization.

68508871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 68508871 is about 8277.0085779827. The cubic root of 68508871 is about 409.1811358054.

The spelling of 68508871 in words is "sixty-eight million, five hundred eight thousand, eight hundred seventy-one".