68169719 has 2 divisors, whose sum is σ = 68169720. Its totient is φ = 68169718.

The previous prime is 68169679. The next prime is 68169737. The reversal of 68169719 is 91796186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68169719 - 2⁸ = 68169463 is a prime.

It is a super-2 number, since 2×68169719² = 9294221177077922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68169919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34084859 + 34084860.

It is an arithmetic number, because the mean of its divisors is an integer number (34084860).

Almost surely, 2^68169719 is an apocalyptic number.

68169719 is a deficient number, since it is larger than the sum of its proper divisors (1).

68169719 is an equidigital number, since it uses as much as digits as its factorization.

68169719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 47.

The square root of 68169719 is about 8256.4955640998. The cubic root of 68169719 is about 408.5048037680.

The spelling of 68169719 in words is "sixty-eight million, one hundred sixty-nine thousand, seven hundred nineteen".