68239836 has 108 divisors (see below), whose sum is σ = 209639248. Its totient is φ = 18330624.

The previous prime is 68239807. The next prime is 68239841. The reversal of 68239836 is 63893286.

It is a junction number, because it is equal to n+sod(n) for n = 68239791 and 68239800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72360 + ... + 73296.

Almost surely, 2^68239836 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 68239836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104819624).

68239836 is an abundant number, since it is smaller than the sum of its proper divisors (141399412).

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

68239836 is a wasteful number, since it uses less digits than its factorization.

68239836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 966 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 68239836 is about 8260.7406447606. The cubic root of 68239836 is about 408.6448137163.

The spelling of 68239836 in words is "sixty-eight million, two hundred thirty-nine thousand, eight hundred thirty-six".