85587847 has 2 divisors, whose sum is σ = 85587848. Its totient is φ = 85587846.

The previous prime is 85587839. The next prime is 85587851. The reversal of 85587847 is 74878558.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85587847 - 2³ = 85587839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85587794 and 85587803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85587547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42793923 + 42793924.

It is an arithmetic number, because the mean of its divisors is an integer number (42793924).

Almost surely, 2^85587847 is an apocalyptic number.

85587847 is a deficient number, since it is larger than the sum of its proper divisors (1).

85587847 is an equidigital number, since it uses as much as digits as its factorization.

85587847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2508800, while the sum is 52.

The square root of 85587847 is about 9251.3700066531. The cubic root of 85587847 is about 440.6942329185.

It can be divided in two parts, 8 and 5587847, that added together give a palindrome (5587855).

The spelling of 85587847 in words is "eighty-five million, five hundred eighty-seven thousand, eight hundred forty-seven".