68321436 has 48 divisors (see below), whose sum is σ = 169827840. Its totient is φ = 21303040.

The previous prime is 68321423. The next prime is 68321437. The reversal of 68321436 is 63412386.

It is a junction number, because it is equal to n+sod(n) for n = 68321397 and 68321406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68321437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35581 + ... + 37451.

It is an arithmetic number, because the mean of its divisors is an integer number (3538080).

Almost surely, 2^68321436 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 68321436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84913920).

68321436 is an abundant number, since it is smaller than the sum of its proper divisors (101506404).

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

68321436 is a wasteful number, since it uses less digits than its factorization.

68321436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074 (or 2072 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 68321436 is about 8265.6781935907. The cubic root of 68321436 is about 408.8076322706.

The spelling of 68321436 in words is "sixty-eight million, three hundred twenty-one thousand, four hundred thirty-six".