4287643 has 2 divisors, whose sum is σ = 4287644. Its totient is φ = 4287642.

The previous prime is 4287623. The next prime is 4287667. The reversal of 4287643 is 3467824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4287643 - 2⁵ = 4287611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4287599 and 4287608.

It is not a weakly prime, because it can be changed into another prime (4287623) 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, 2143821 + 2143822.

It is an arithmetic number, because the mean of its divisors is an integer number (2143822).

Almost surely, 2^4287643 is an apocalyptic number.

4287643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4287643 is an equidigital number, since it uses as much as digits as its factorization.

4287643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The square root of 4287643 is about 2070.6624543851. The cubic root of 4287643 is about 162.4574152712.

The spelling of 4287643 in words is "four million, two hundred eighty-seven thousand, six hundred forty-three".