68289744 has 80 divisors (see below), whose sum is σ = 182113344. Its totient is φ = 22041600.

The previous prime is 68289713. The next prime is 68289763. The reversal of 68289744 is 44798286.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 68289693 and 68289702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242884 + ... + 243164.

Almost surely, 2^68289744 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 68289744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91056672).

68289744 is an abundant number, since it is smaller than the sum of its proper divisors (113823600).

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

68289744 is a wasteful number, since it uses less digits than its factorization.

68289744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 430 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 68289744 is about 8263.7608871506. The cubic root of 68289744 is about 408.7444118231.

The spelling of 68289744 in words is "sixty-eight million, two hundred eighty-nine thousand, seven hundred forty-four".