85563847 has 2 divisors, whose sum is σ = 85563848. Its totient is φ = 85563846.

The previous prime is 85563827. The next prime is 85563883. The reversal of 85563847 is 74836558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85563847 - 2⁷ = 85563719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85563797 and 85563806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85563827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42781923 + 42781924.

It is an arithmetic number, because the mean of its divisors is an integer number (42781924).

Almost surely, 2^85563847 is an apocalyptic number.

85563847 is a deficient number, since it is larger than the sum of its proper divisors (1).

85563847 is an equidigital number, since it uses as much as digits as its factorization.

85563847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 46.

The square root of 85563847 is about 9250.0728105243. The cubic root of 85563847 is about 440.6530368425.

It can be divided in two parts, 8556 and 3847, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 85563847 in words is "eighty-five million, five hundred sixty-three thousand, eight hundred forty-seven".