68665422 has 64 divisors (see below), whose sum is σ = 161948160. Its totient is φ = 19004544.

The previous prime is 68665409. The next prime is 68665423. The reversal of 68665422 is 22456686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68665423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242493 + ... + 242775.

It is an arithmetic number, because the mean of its divisors is an integer number (2530440).

Almost surely, 2^68665422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68665422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80974080).

68665422 is an abundant number, since it is smaller than the sum of its proper divisors (93282738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68665422 is a wasteful number, since it uses less digits than its factorization.

68665422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its digits is 138240, while the sum is 39.

The square root of 68665422 is about 8286.4601610096. The cubic root of 68665422 is about 409.4925747169.

The spelling of 68665422 in words is "sixty-eight million, six hundred sixty-five thousand, four hundred twenty-two".