8642743623 has 12 divisors (see below), whose sum is σ = 12485411640. Its totient is φ = 5761160496.

The previous prime is 8642743607. The next prime is 8642743633. The reversal of 8642743623 is 3263472468.

It is not a de Polignac number, because 8642743623 - 2⁴ = 8642743607 is a prime.

It is a super-3 number, since 3×8642743623³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8642743633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33708 + ... + 135726.

It is an arithmetic number, because the mean of its divisors is an integer number (1040450970).

Almost surely, 2^8642743623 is an apocalyptic number.

8642743623 is a deficient number, since it is larger than the sum of its proper divisors (3842668017).

8642743623 is a wasteful number, since it uses less digits than its factorization.

8642743623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111438 (or 111435 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The square root of 8642743623 is about 92966.3574794667. The cubic root of 8642743623 is about 2052.1883134578.

The spelling of 8642743623 in words is "eight billion, six hundred forty-two million, seven hundred forty-three thousand, six hundred twenty-three".