68466719 has 2 divisors, whose sum is σ = 68466720. Its totient is φ = 68466718.

The previous prime is 68466703. The next prime is 68466731. The reversal of 68466719 is 91766486.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68466719 - 2⁴ = 68466703 is a prime.

It is a super-2 number, since 2×68466719² = 9375383221249922, 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 (68466799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34233359 + 34233360.

It is an arithmetic number, because the mean of its divisors is an integer number (34233360).

Almost surely, 2^68466719 is an apocalyptic number.

68466719 is a deficient number, since it is larger than the sum of its proper divisors (1).

68466719 is an equidigital number, since it uses as much as digits as its factorization.

68466719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 68466719 is about 8274.4618556133. The cubic root of 68466719 is about 409.0971985400.

The spelling of 68466719 in words is "sixty-eight million, four hundred sixty-six thousand, seven hundred nineteen".