68141720 has 64 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 26144640.

The previous prime is 68141719. The next prime is 68141741. The reversal of 68141720 is 2714186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221807 + ... + 222113.

It is an arithmetic number, because the mean of its divisors is an integer number (2494800).

Almost surely, 2^68141720 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 68141720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600).

68141720 is an abundant number, since it is smaller than the sum of its proper divisors (91525480).

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

68141720 is a wasteful number, since it uses less digits than its factorization.

68141720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 68141720 is about 8254.7998158647. The cubic root of 68141720 is about 408.4488684131.

The spelling of 68141720 in words is "sixty-eight million, one hundred forty-one thousand, seven hundred twenty".