85636587 has 16 divisors (see below), whose sum is σ = 115903008. Its totient is φ = 56236800.

The previous prime is 85636561. The next prime is 85636597. The reversal of 85636587 is 78563658.

It is not a de Polignac number, because 85636587 - 2¹⁴ = 85620203 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (85636597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69993 + ... + 71205.

It is an arithmetic number, because the mean of its divisors is an integer number (7243938).

Almost surely, 2^85636587 is an apocalyptic number.

85636587 is a deficient number, since it is larger than the sum of its proper divisors (30266421).

85636587 is a wasteful number, since it uses less digits than its factorization.

85636587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550.

The product of its digits is 1209600, while the sum is 48.

The square root of 85636587 is about 9254.0038361782. The cubic root of 85636587 is about 440.7778715878. Note that the first 3 decimals are identical.

The spelling of 85636587 in words is "eighty-five million, six hundred thirty-six thousand, five hundred eighty-seven".