68235726 has 64 divisors (see below), whose sum is σ = 158618880. Its totient is φ = 19388160.

The previous prime is 68235721. The next prime is 68235731. The reversal of 68235726 is 62753286.

It is an interprime number because it is at equal distance from previous prime (68235721) and next prime (68235731).

It is a super-2 number, since 2×68235726² = 9312228605494152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68235721) 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 31 ways as a sum of consecutive naturals, for example, 60201 + ... + 61323.

It is an arithmetic number, because the mean of its divisors is an integer number (2478420).

Almost surely, 2^68235726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68235726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79309440).

68235726 is an abundant number, since it is smaller than the sum of its proper divisors (90383154).

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

68235726 is a wasteful number, since it uses less digits than its factorization.

68235726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201.

The product of its digits is 120960, while the sum is 39.

The square root of 68235726 is about 8260.4918739746. The cubic root of 68235726 is about 408.6366094961.

The spelling of 68235726 in words is "sixty-eight million, two hundred thirty-five thousand, seven hundred twenty-six".