8641571 has 2 divisors, whose sum is σ = 8641572. Its totient is φ = 8641570.

The previous prime is 8641547. The next prime is 8641603. The reversal of 8641571 is 1751468.

It is a happy number.

It is an a-pointer prime, because the next prime (8641603) can be obtained adding 8641571 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8641571 - 2¹⁰ = 8640547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8641541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4320785 + 4320786.

It is an arithmetic number, because the mean of its divisors is an integer number (4320786).

Almost surely, 2^8641571 is an apocalyptic number.

8641571 is a deficient number, since it is larger than the sum of its proper divisors (1).

8641571 is an equidigital number, since it uses as much as digits as its factorization.

8641571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 32.

The square root of 8641571 is about 2939.6549117201. The cubic root of 8641571 is about 205.2095497559.

The spelling of 8641571 in words is "eight million, six hundred forty-one thousand, five hundred seventy-one".