68043724 has 24 divisors (see below), whose sum is σ = 144093600. Its totient is φ = 27446016.

The previous prime is 68043721. The next prime is 68043737. The reversal of 68043724 is 42734086.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 68043724.

It is not an unprimeable number, because it can be changed into a prime (68043721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70999 + ... + 71950.

It is an arithmetic number, because the mean of its divisors is an integer number (6003900).

Almost surely, 2^68043724 is an apocalyptic number.

It is an amenable number.

68043724 is an abundant number, since it is smaller than the sum of its proper divisors (76049876).

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

68043724 is a wasteful number, since it uses less digits than its factorization.

68043724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142977 (or 142975 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 68043724 is about 8248.8619821161. The cubic root of 68043724 is about 408.2529749222.

The spelling of 68043724 in words is "sixty-eight million, forty-three thousand, seven hundred twenty-four".