68868719 has 4 divisors (see below), whose sum is σ = 68914896. Its totient is φ = 68822544.

The previous prime is 68868713. The next prime is 68868721. The reversal of 68868719 is 91786886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91786886 = 2 ⋅45893443.

It is a cyclic number.

It is not a de Polignac number, because 68868719 - 2⁴ = 68868703 is a prime.

It is a super-2 number, since 2×68868719² = 9485800913401922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68868713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20774 + ... + 23859.

It is an arithmetic number, because the mean of its divisors is an integer number (17228724).

Almost surely, 2^68868719 is an apocalyptic number.

68868719 is a deficient number, since it is larger than the sum of its proper divisors (46177).

68868719 is a wasteful number, since it uses less digits than its factorization.

68868719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46176.

The product of its digits is 1161216, while the sum is 53.

The square root of 68868719 is about 8298.7179130273. The cubic root of 68868719 is about 409.8963033411.

The spelling of 68868719 in words is "sixty-eight million, eight hundred sixty-eight thousand, seven hundred nineteen".