68743783 has 4 divisors (see below), whose sum is σ = 69165688. Its totient is φ = 68321880.

The previous prime is 68743781. The next prime is 68743811. The reversal of 68743783 is 38734786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38734786 = 2 ⋅19367393.

It is a cyclic number.

It is not a de Polignac number, because 68743783 - 2¹ = 68743781 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 (68743781) 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, 210708 + ... + 211033.

It is an arithmetic number, because the mean of its divisors is an integer number (17291422).

Almost surely, 2^68743783 is an apocalyptic number.

68743783 is a deficient number, since it is larger than the sum of its proper divisors (421905).

68743783 is a wasteful number, since it uses less digits than its factorization.

68743783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421904.

The product of its digits is 677376, while the sum is 46.

The square root of 68743783 is about 8291.1870682068. The cubic root of 68743783 is about 409.6482865151.

The spelling of 68743783 in words is "sixty-eight million, seven hundred forty-three thousand, seven hundred eighty-three".