9913643 has 2 divisors, whose sum is σ = 9913644. Its totient is φ = 9913642.

The previous prime is 9913637. The next prime is 9913661. The reversal of 9913643 is 3463199.

9913643 is nontrivially palindromic in base 6.

9913643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (3463199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9913643 - 2¹⁶ = 9848107 is a prime.

It is not a weakly prime, because it can be changed into another prime (9913613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4956821 + 4956822.

It is an arithmetic number, because the mean of its divisors is an integer number (4956822).

Almost surely, 2^9913643 is an apocalyptic number.

9913643 is a deficient number, since it is larger than the sum of its proper divisors (1).

9913643 is an equidigital number, since it uses as much as digits as its factorization.

9913643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 35.

The square root of 9913643 is about 3148.5938131172. The cubic root of 9913643 is about 214.8215068044.

The spelling of 9913643 in words is "nine million, nine hundred thirteen thousand, six hundred forty-three".