84197563 has 2 divisors, whose sum is σ = 84197564. Its totient is φ = 84197562.

The previous prime is 84197557. The next prime is 84197567. The reversal of 84197563 is 36579148.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84197563 - 2⁹ = 84197051 is a prime.

It is not a weakly prime, because it can be changed into another prime (84197567) 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, 42098781 + 42098782.

It is an arithmetic number, because the mean of its divisors is an integer number (42098782).

Almost surely, 2^84197563 is an apocalyptic number.

84197563 is a deficient number, since it is larger than the sum of its proper divisors (1).

84197563 is an equidigital number, since it uses as much as digits as its factorization.

84197563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 84197563 is about 9175.9230053439. The cubic root of 84197563 is about 438.2949907749.

The spelling of 84197563 in words is "eighty-four million, one hundred ninety-seven thousand, five hundred sixty-three".