68268736 has 42 divisors (see below), whose sum is σ = 143947388. Its totient is φ = 32117760.

The previous prime is 68268721. The next prime is 68268749. The reversal of 68268736 is 63786286.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16651 + ... + 20341.

Almost surely, 2^68268736 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 68268736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71973694).

68268736 is an abundant number, since it is smaller than the sum of its proper divisors (75678652).

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

68268736 is a wasteful number, since it uses less digits than its factorization.

68268736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737 (or 3710 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 68268736 is about 8262.4896974217. The cubic root of 68268736 is about 408.7024934579.

The spelling of 68268736 in words is "sixty-eight million, two hundred sixty-eight thousand, seven hundred thirty-six".