85585887 has 6 divisors (see below), whose sum is σ = 123624072. Its totient is φ = 57057252.

The previous prime is 85585859. The next prime is 85585897. The reversal of 85585887 is 78858558.

85585887 is a `hidden beast` number, since 8 + 5 + 58 + 588 + 7 = 666.

It is not a de Polignac number, because 85585887 - 2¹⁴ = 85569503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85585897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4754763 + ... + 4754780.

It is an arithmetic number, because the mean of its divisors is an integer number (20604012).

Almost surely, 2^85585887 is an apocalyptic number.

85585887 is a deficient number, since it is larger than the sum of its proper divisors (38038185).

85585887 is a wasteful number, since it uses less digits than its factorization.

85585887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9509549 (or 9509546 counting only the distinct ones).

The product of its digits is 3584000, while the sum is 54.

The square root of 85585887 is about 9251.2640757899. The cubic root of 85585887 is about 440.6908688611.

The spelling of 85585887 in words is "eighty-five million, five hundred eighty-five thousand, eight hundred eighty-seven".