68742671 has 2 divisors, whose sum is σ = 68742672. Its totient is φ = 68742670.

The previous prime is 68742631. The next prime is 68742701. The reversal of 68742671 is 17624786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68742671 - 2¹⁸ = 68480527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68742601) 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, 34371335 + 34371336.

It is an arithmetic number, because the mean of its divisors is an integer number (34371336).

Almost surely, 2^68742671 is an apocalyptic number.

68742671 is a deficient number, since it is larger than the sum of its proper divisors (1).

68742671 is an equidigital number, since it uses as much as digits as its factorization.

68742671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 68742671 is about 8291.1200087805. The cubic root of 68742671 is about 409.6460776785.

The spelling of 68742671 in words is "sixty-eight million, seven hundred forty-two thousand, six hundred seventy-one".