68145383 has 4 divisors (see below), whose sum is σ = 68770680. Its totient is φ = 67520088.

The previous prime is 68145377. The next prime is 68145433. The reversal of 68145383 is 38354186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68145383 - 2¹⁴ = 68128999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68145323) 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, 312485 + ... + 312702.

It is an arithmetic number, because the mean of its divisors is an integer number (17192670).

Almost surely, 2^68145383 is an apocalyptic number.

68145383 is a deficient number, since it is larger than the sum of its proper divisors (625297).

68145383 is a wasteful number, since it uses less digits than its factorization.

68145383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625296.

The product of its digits is 69120, while the sum is 38.

The square root of 68145383 is about 8255.0216837995. The cubic root of 68145383 is about 408.4561870885.

It can be divided in two parts, 681 and 45383, that added together give a palindrome (46064).

The spelling of 68145383 in words is "sixty-eight million, one hundred forty-five thousand, three hundred eighty-three".