8116643 has 2 divisors, whose sum is σ = 8116644. Its totient is φ = 8116642.

The previous prime is 8116621. The next prime is 8116681. The reversal of 8116643 is 3466118.

8116643 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 is a cyclic number.

It is not a de Polignac number, because 8116643 - 2¹⁴ = 8100259 is a prime.

It is not a weakly prime, because it can be changed into another prime (8116243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058321 + 4058322.

It is an arithmetic number, because the mean of its divisors is an integer number (4058322).

Almost surely, 2^8116643 is an apocalyptic number.

8116643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8116643 is an equidigital number, since it uses as much as digits as its factorization.

8116643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 8116643 is about 2848.9722708373. The cubic root of 8116643 is about 200.9673387357.

The spelling of 8116643 in words is "eight million, one hundred sixteen thousand, six hundred forty-three".