68818869 has 64 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 37549440.

The previous prime is 68818861. The next prime is 68818901. The reversal of 68818869 is 96881886.

It is not a de Polignac number, because 68818869 - 2³ = 68818861 is a prime.

It is a super-2 number, since 2×68818869² = 9472073460878322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68818861) 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 63 ways as a sum of consecutive naturals, for example, 643114 + ... + 643220.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^68818869 is an apocalyptic number.

It is an amenable number.

68818869 is a deficient number, since it is larger than the sum of its proper divisors (53108811).

68818869 is a wasteful number, since it uses less digits than its factorization.

68818869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 241 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 68818869 is about 8295.7138933307. The cubic root of 68818869 is about 409.7973795570.

The spelling of 68818869 in words is "sixty-eight million, eight hundred eighteen thousand, eight hundred sixty-nine".