68821422 has 8 divisors (see below), whose sum is σ = 137642856. Its totient is φ = 22940472.

The previous prime is 68821409. The next prime is 68821429. The reversal of 68821422 is 22412886.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

68821422 is an admirable number.

It is a super-2 number, since 2×68821422² = 9472776252204168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68821429) 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 3 ways as a sum of consecutive naturals, for example, 5735113 + ... + 5735124.

It is an arithmetic number, because the mean of its divisors is an integer number (17205357).

Almost surely, 2^68821422 is an apocalyptic number.

68821422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68821422 is a wasteful number, since it uses less digits than its factorization.

68821422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11470242.

The product of its digits is 12288, while the sum is 33.

The square root of 68821422 is about 8295.8677665450. The cubic root of 68821422 is about 409.8024469646.

The spelling of 68821422 in words is "sixty-eight million, eight hundred twenty-one thousand, four hundred twenty-two".