68989868 has 12 divisors (see below), whose sum is σ = 121928352. Its totient is φ = 34153200.

The previous prime is 68989861. The next prime is 68989901. The reversal of 68989868 is 86898986.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68989868.

It is not an unprimeable number, because it can be changed into a prime (68989861) 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 3 ways as a sum of consecutive naturals, for example, 84980 + ... + 85787.

It is an arithmetic number, because the mean of its divisors is an integer number (10160696).

Almost surely, 2^68989868 is an apocalyptic number.

It is an amenable number.

68989868 is a deficient number, since it is larger than the sum of its proper divisors (52938484).

68989868 is a wasteful number, since it uses less digits than its factorization.

68989868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170872 (or 170870 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 62.

The square root of 68989868 is about 8306.0139657961. The cubic root of 68989868 is about 410.1365161102.

The spelling of 68989868 in words is "sixty-eight million, nine hundred eighty-nine thousand, eight hundred sixty-eight".