68729850 has 144 divisors (see below), whose sum is σ = 220521600. Its totient is φ = 15694560.

The previous prime is 68729813. The next prime is 68729851. The reversal of 68729850 is 5892786.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68729796 and 68729805.

It is not an unprimeable number, because it can be changed into a prime (68729851) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65631 + ... + 66669.

It is an arithmetic number, because the mean of its divisors is an integer number (1531400).

Almost surely, 2^68729850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68729850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110260800).

68729850 is an abundant number, since it is smaller than the sum of its proper divisors (151791750).

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

68729850 is a wasteful number, since it uses less digits than its factorization.

68729850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 68729850 is about 8290.3467961238. The cubic root of 68729850 is about 409.6206087869.

The spelling of 68729850 in words is "sixty-eight million, seven hundred twenty-nine thousand, eight hundred fifty".