68181750 has 320 divisors, whose sum is σ = 241008768. Its totient is φ = 13996800.

The previous prime is 68181739. The next prime is 68181769. The reversal of 68181750 is 5718186.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1842732 + ... + 1842768.

Almost surely, 2^68181750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68181750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120504384).

68181750 is an abundant number, since it is smaller than the sum of its proper divisors (172827018).

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

68181750 is a wasteful number, since it uses less digits than its factorization.

68181750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 68181750 is about 8257.2241098326. The cubic root of 68181750 is about 408.5288341453.

The spelling of 68181750 in words is "sixty-eight million, one hundred eighty-one thousand, seven hundred fifty".