8011643 has 2 divisors, whose sum is σ = 8011644. Its totient is φ = 8011642.

The previous prime is 8011621. The next prime is 8011651. The reversal of 8011643 is 3461108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8011643 - 2⁸ = 8011387 is a prime.

It is equal to p₅₄₀₅₀₉ and since 8011643 and 540509 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8011693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4005821 + 4005822.

It is an arithmetic number, because the mean of its divisors is an integer number (4005822).

Almost surely, 2^8011643 is an apocalyptic number.

8011643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8011643 is an equidigital number, since it uses as much as digits as its factorization.

8011643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 8011643 is about 2830.4845874867. The cubic root of 8011643 is about 200.0969779688.

The spelling of 8011643 in words is "eight million, eleven thousand, six hundred forty-three".