84828643 has 2 divisors, whose sum is σ = 84828644. Its totient is φ = 84828642.

The previous prime is 84828641. The next prime is 84828677. The reversal of 84828643 is 34682848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84828643 - 2¹ = 84828641 is a prime.

Together with 84828641, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 84828643.

It is not a weakly prime, because it can be changed into another prime (84828641) 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, 42414321 + 42414322.

It is an arithmetic number, because the mean of its divisors is an integer number (42414322).

Almost surely, 2^84828643 is an apocalyptic number.

84828643 is a deficient number, since it is larger than the sum of its proper divisors (1).

84828643 is an equidigital number, since it uses as much as digits as its factorization.

84828643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294912, while the sum is 43.

The square root of 84828643 is about 9210.2466307912. The cubic root of 84828643 is about 439.3873066651.

The spelling of 84828643 in words is "eighty-four million, eight hundred twenty-eight thousand, six hundred forty-three".