68816412 has 96 divisors (see below), whose sum is σ = 205309440. Its totient is φ = 19526400.

The previous prime is 68816401. The next prime is 68816417. The reversal of 68816412 is 21461886.

68816412 is a `hidden beast` number, since 6 + 8 + 8 + 1 + 641 + 2 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68816417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171412 + ... + 171812.

It is an arithmetic number, because the mean of its divisors is an integer number (2138640).

Almost surely, 2^68816412 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 68816412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102654720).

68816412 is an abundant number, since it is smaller than the sum of its proper divisors (136493028).

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

68816412 is a wasteful number, since it uses less digits than its factorization.

68816412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 640 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 68816412 is about 8295.5658034880. The cubic root of 68816412 is about 409.7925025799.

The spelling of 68816412 in words is "sixty-eight million, eight hundred sixteen thousand, four hundred twelve".