68819912 has 36 divisors (see below), whose sum is σ = 150463755. Its totient is φ = 29423856.

The previous prime is 68819879. The next prime is 68819953. The reversal of 68819912 is 21991886.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 34409956 + 34409956 = 5866^2 + 5866^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5866.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 164039 + ... + 164457.

Almost surely, 2^68819912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68819912

68819912 is an abundant number, since it is smaller than the sum of its proper divisors (81643843).

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

68819912 is an equidigital number, since it uses as much as digits as its factorization.

68819912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 428 counting only the distinct ones).

The product of its digits is 62208, while the sum is 44.

The square root of 68819912 is about 8295.7767568806. The cubic root of 68819912 is about 409.7994498057.

The spelling of 68819912 in words is "sixty-eight million, eight hundred nineteen thousand, nine hundred twelve".