68744743 has 4 divisors (see below), whose sum is σ = 69871768. Its totient is φ = 67617720.

The previous prime is 68744729. The next prime is 68744759. The reversal of 68744743 is 34744786.

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 68744743 - 2⁹ = 68744231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68744743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68744783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563421 + ... + 563542.

It is an arithmetic number, because the mean of its divisors is an integer number (17467942).

Almost surely, 2^68744743 is an apocalyptic number.

68744743 is a deficient number, since it is larger than the sum of its proper divisors (1127025).

68744743 is a wasteful number, since it uses less digits than its factorization.

68744743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127024.

The product of its digits is 451584, while the sum is 43.

The square root of 68744743 is about 8291.2449608005. The cubic root of 68744743 is about 409.6501934053.

Adding to 68744743 its sum of digits (43), we get a palindrome (68744786).

The spelling of 68744743 in words is "sixty-eight million, seven hundred forty-four thousand, seven hundred forty-three".