68389388 has 6 divisors (see below), whose sum is σ = 119681436. Its totient is φ = 34194692.

The previous prime is 68389381. The next prime is 68389397. The reversal of 68389388 is 88398386.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68389381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8548670 + ... + 8548677.

It is an arithmetic number, because the mean of its divisors is an integer number (19946906).

Almost surely, 2^68389388 is an apocalyptic number.

It is an amenable number.

68389388 is a deficient number, since it is larger than the sum of its proper divisors (51292048).

68389388 is a wasteful number, since it uses less digits than its factorization.

68389388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17097351 (or 17097349 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The square root of 68389388 is about 8269.7876635377. The cubic root of 68389388 is about 408.9431197215.

The spelling of 68389388 in words is "sixty-eight million, three hundred eighty-nine thousand, three hundred eighty-eight".