68888879 has 8 divisors (see below), whose sum is σ = 73029600. Its totient is φ = 64758016.

The previous prime is 68888873. The next prime is 68888893. The reversal of 68888879 is 97888886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68888879 - 2⁴ = 68888863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68888873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15902 + ... + 19764.

It is an arithmetic number, because the mean of its divisors is an integer number (9128700).

Almost surely, 2^68888879 is an apocalyptic number.

68888879 is a deficient number, since it is larger than the sum of its proper divisors (4140721).

68888879 is a wasteful number, since it uses less digits than its factorization.

68888879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929.

The product of its digits is 12386304, while the sum is 62.

The square root of 68888879 is about 8299.9324696048. The cubic root of 68888879 is about 409.9362958728.

The spelling of 68888879 in words is "sixty-eight million, eight hundred eighty-eight thousand, eight hundred seventy-nine".