84320563 has 2 divisors, whose sum is σ = 84320564. Its totient is φ = 84320562.

The previous prime is 84320519. The next prime is 84320567. The reversal of 84320563 is 36502348.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84320563 is a prime.

It is equal to p_4906570 and since 84320563 and 4906570 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 (84320567) 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, 42160281 + 42160282.

It is an arithmetic number, because the mean of its divisors is an integer number (42160282).

Almost surely, 2^84320563 is an apocalyptic number.

84320563 is a deficient number, since it is larger than the sum of its proper divisors (1).

84320563 is an equidigital number, since it uses as much as digits as its factorization.

84320563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 84320563 is about 9182.6228823795. The cubic root of 84320563 is about 438.5083146591.

The spelling of 84320563 in words is "eighty-four million, three hundred twenty thousand, five hundred sixty-three".