9996748643 has 8 divisors (see below), whose sum is σ = 11450883840. Its totient is φ = 8549120520.

The previous prime is 9996748639. The next prime is 9996748669. The reversal of 9996748643 is 3468476999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9996748643 - 2² = 9996748639 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 9996748643.

It is not an unprimeable number, because it can be changed into a prime (9996748693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623473 + ... + 1629618.

It is an arithmetic number, because the mean of its divisors is an integer number (1431360480).

Almost surely, 2^9996748643 is an apocalyptic number.

9996748643 is a deficient number, since it is larger than the sum of its proper divisors (1454135197).

9996748643 is a wasteful number, since it uses less digits than its factorization.

9996748643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253537.

The product of its digits is 70543872, while the sum is 65.

The square root of 9996748643 is about 99983.7418933698. The cubic root of 9996748643 is about 2154.2011701778.

The spelling of 9996748643 in words is "nine billion, nine hundred ninety-six million, seven hundred forty-eight thousand, six hundred forty-three".