68422689 has 6 divisors (see below), whose sum is σ = 98832786. Its totient is φ = 45615120.

The previous prime is 68422649. The next prime is 68422703. The reversal of 68422689 is 98622486.

It can be written as a sum of positive squares in only one way, i.e., 49238289 + 19184400 = 7017^2 + 4380^2 .

It is not a de Polignac number, because 68422689 - 2⁷ = 68422561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68422619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3801252 + ... + 3801269.

It is an arithmetic number, because the mean of its divisors is an integer number (16472131).

Almost surely, 2^68422689 is an apocalyptic number.

It is an amenable number.

68422689 is a deficient number, since it is larger than the sum of its proper divisors (30410097).

68422689 is a wasteful number, since it uses less digits than its factorization.

68422689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602527 (or 7602524 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 68422689 is about 8271.8008317415. The cubic root of 68422689 is about 409.0094848182.

The spelling of 68422689 in words is "sixty-eight million, four hundred twenty-two thousand, six hundred eighty-nine".