8897641 has 2 divisors, whose sum is σ = 8897642. Its totient is φ = 8897640.

The previous prime is 8897639. The next prime is 8897653. The reversal of 8897641 is 1467988.

8897641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7507600 + 1390041 = 2740^2 + 1179^2 .

It is a cyclic number.

It is not a de Polignac number, because 8897641 - 2¹ = 8897639 is a prime.

Together with 8897639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8897621) 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, 4448820 + 4448821.

It is an arithmetic number, because the mean of its divisors is an integer number (4448821).

Almost surely, 2^8897641 is an apocalyptic number.

It is an amenable number.

8897641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8897641 is an equidigital number, since it uses as much as digits as its factorization.

8897641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 8897641 is about 2982.8913825347. The cubic root of 8897641 is about 207.2167985392.

The spelling of 8897641 in words is "eight million, eight hundred ninety-seven thousand, six hundred forty-one".