68143746 has 32 divisors (see below), whose sum is σ = 150009408. Its totient is φ = 20464640.

The previous prime is 68143723. The next prime is 68143781. The reversal of 68143746 is 64734186.

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, 2890 + ... + 12026.

It is an arithmetic number, because the mean of its divisors is an integer number (4687794).

Almost surely, 2^68143746 is an apocalyptic number.

68143746 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 68143746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75004704).

68143746 is an abundant number, since it is smaller than the sum of its proper divisors (81865662).

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

68143746 is a wasteful number, since it uses less digits than its factorization.

68143746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9266.

The product of its digits is 96768, while the sum is 39.

The square root of 68143746 is about 8254.9225314354. The cubic root of 68143746 is about 408.4529163943.

The spelling of 68143746 in words is "sixty-eight million, one hundred forty-three thousand, seven hundred forty-six".