85787385 has 16 divisors (see below), whose sum is σ = 141688320. Its totient is φ = 44277120.

The previous prime is 85787381. The next prime is 85787417. The reversal of 85787385 is 58378758.

It is not a de Polignac number, because 85787385 - 2² = 85787381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85787381) 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 in 15 ways as a sum of consecutive naturals, for example, 91780 + ... + 92709.

It is an arithmetic number, because the mean of its divisors is an integer number (8855520).

Almost surely, 2^85787385 is an apocalyptic number.

It is an amenable number.

85787385 is a deficient number, since it is larger than the sum of its proper divisors (55900935).

85787385 is a wasteful number, since it uses less digits than its factorization.

85787385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184528.

The product of its digits is 1881600, while the sum is 51.

The square root of 85787385 is about 9262.1479690188. The cubic root of 85787385 is about 441.0364427081.

The spelling of 85787385 in words is "eighty-five million, seven hundred eighty-seven thousand, three hundred eighty-five".