68210719 has 2 divisors, whose sum is σ = 68210720. Its totient is φ = 68210718.

The previous prime is 68210717. The next prime is 68210731. The reversal of 68210719 is 91701286.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68210719 - 2¹ = 68210717 is a prime.

It is a super-2 number, since 2×68210719² = 9305404372993922, which contains 22 as substring.

Together with 68210717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68210717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34105359 + 34105360.

It is an arithmetic number, because the mean of its divisors is an integer number (34105360).

Almost surely, 2^68210719 is an apocalyptic number.

68210719 is a deficient number, since it is larger than the sum of its proper divisors (1).

68210719 is an equidigital number, since it uses as much as digits as its factorization.

68210719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 68210719 is about 8258.9780844848. The cubic root of 68210719 is about 408.5866844062.

The spelling of 68210719 in words is "sixty-eight million, two hundred ten thousand, seven hundred nineteen".