68591443 has 4 divisors (see below), whose sum is σ = 68608008. Its totient is φ = 68574880.

The previous prime is 68591441. The next prime is 68591461. The reversal of 68591443 is 34419586.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68591443 - 2¹ = 68591441 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68591396 and 68591405.

It is not an unprimeable number, because it can be changed into a prime (68591441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4128 + ... + 12418.

It is an arithmetic number, because the mean of its divisors is an integer number (17152002).

Almost surely, 2^68591443 is an apocalyptic number.

68591443 is a deficient number, since it is larger than the sum of its proper divisors (16565).

68591443 is an equidigital number, since it uses as much as digits as its factorization.

68591443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16564.

The product of its digits is 103680, while the sum is 40.

The square root of 68591443 is about 8281.9951098754. The cubic root of 68591443 is about 409.3454616762.

The spelling of 68591443 in words is "sixty-eight million, five hundred ninety-one thousand, four hundred forty-three".