68187744 has 168 divisors, whose sum is σ = 209331360. Its totient is φ = 21835008.

The previous prime is 68187719. The next prime is 68187773. The reversal of 68187744 is 44778186.

It is a self number, because there is not a number n which added to its sum of digits gives 68187744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 863097 + ... + 863175.

It is an arithmetic number, because the mean of its divisors is an integer number (1246020).

Almost surely, 2^68187744 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 68187744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104665680).

68187744 is an abundant number, since it is smaller than the sum of its proper divisors (141143616).

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

68187744 is an equidigital number, since it uses as much as digits as its factorization.

68187744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 121 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 68187744 is about 8257.5870567618. The cubic root of 68187744 is about 408.5408053354.

The spelling of 68187744 in words is "sixty-eight million, one hundred eighty-seven thousand, seven hundred forty-four".