68888869 has 16 divisors (see below), whose sum is σ = 80179200. Its totient is φ = 57970224.

The previous prime is 68888867. The next prime is 68888873. The reversal of 68888869 is 96888886.

It is a cyclic number.

It is not a de Polignac number, because 68888869 - 2¹ = 68888867 is a prime.

It is a super-2 number, since 2×68888869² = 9491352544198322, 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 (68888861) 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 in 15 ways as a sum of consecutive naturals, for example, 191712 + ... + 192070.

It is an arithmetic number, because the mean of its divisors is an integer number (5011200).

Almost surely, 2^68888869 is an apocalyptic number.

It is an amenable number.

68888869 is a deficient number, since it is larger than the sum of its proper divisors (11290331).

68888869 is a wasteful number, since it uses less digits than its factorization.

68888869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 10616832, while the sum is 61.

The square root of 68888869 is about 8299.9318671902. The cubic root of 68888869 is about 409.9362760372.

The spelling of 68888869 in words is "sixty-eight million, eight hundred eighty-eight thousand, eight hundred sixty-nine".