68617427 has 2 divisors, whose sum is σ = 68617428. Its totient is φ = 68617426.

The previous prime is 68617421. The next prime is 68617429. The reversal of 68617427 is 72471686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68617427 - 2¹² = 68613331 is a prime.

Together with 68617429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68617421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34308713 + 34308714.

It is an arithmetic number, because the mean of its divisors is an integer number (34308714).

Almost surely, 2^68617427 is an apocalyptic number.

68617427 is a deficient number, since it is larger than the sum of its proper divisors (1).

68617427 is an equidigital number, since it uses as much as digits as its factorization.

68617427 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 68617427 is about 8283.5636654764. The cubic root of 68617427 is about 409.3971449435.

The spelling of 68617427 in words is "sixty-eight million, six hundred seventeen thousand, four hundred twenty-seven".