8047643 has 2 divisors, whose sum is σ = 8047644. Its totient is φ = 8047642.

The previous prime is 8047601. The next prime is 8047649. The reversal of 8047643 is 3467408.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8047643 - 2¹⁸ = 7785499 is a prime.

It is not a weakly prime, because it can be changed into another prime (8047649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4023821 + 4023822.

It is an arithmetic number, because the mean of its divisors is an integer number (4023822).

Almost surely, 2^8047643 is an apocalyptic number.

8047643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8047643 is an equidigital number, since it uses as much as digits as its factorization.

8047643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 8047643 is about 2836.8367947416. The cubic root of 8047643 is about 200.3962394530.

The spelling of 8047643 in words is "eight million, forty-seven thousand, six hundred forty-three".