85819963 has 2 divisors, whose sum is σ = 85819964. Its totient is φ = 85819962.

The previous prime is 85819949. The next prime is 85820023. The reversal of 85819963 is 36991858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85819963 - 2⁵ = 85819931 is a prime.

It is not a weakly prime, because it can be changed into another prime (85819913) 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, 42909981 + 42909982.

It is an arithmetic number, because the mean of its divisors is an integer number (42909982).

Almost surely, 2^85819963 is an apocalyptic number.

85819963 is a deficient number, since it is larger than the sum of its proper divisors (1).

85819963 is an equidigital number, since it uses as much as digits as its factorization.

85819963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 49.

The square root of 85819963 is about 9263.9064654173. The cubic root of 85819963 is about 441.0922639178.

The spelling of 85819963 in words is "eighty-five million, eight hundred nineteen thousand, nine hundred sixty-three".