9643541 has 2 divisors, whose sum is σ = 9643542. Its totient is φ = 9643540.

The previous prime is 9643537. The next prime is 9643547. The reversal of 9643541 is 1453469.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9579025 + 64516 = 3095^2 + 254^2 .

It is an emirp because it is prime and its reverse (1453469) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9643541 - 2² = 9643537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9643498 and 9643507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9643547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4821770 + 4821771.

It is an arithmetic number, because the mean of its divisors is an integer number (4821771).

Almost surely, 2^9643541 is an apocalyptic number.

It is an amenable number.

9643541 is a deficient number, since it is larger than the sum of its proper divisors (1).

9643541 is an equidigital number, since it uses as much as digits as its factorization.

9643541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 9643541 is about 3105.4051265495. The cubic root of 9643541 is about 212.8525432867.

The spelling of 9643541 in words is "nine million, six hundred forty-three thousand, five hundred forty-one".