85133687 has 4 divisors (see below), whose sum is σ = 85914840. Its totient is φ = 84352536.

The previous prime is 85133669. The next prime is 85133701. The reversal of 85133687 is 78633158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85133687 - 2⁸ = 85133431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85133287) 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 3 ways as a sum of consecutive naturals, for example, 390413 + ... + 390630.

It is an arithmetic number, because the mean of its divisors is an integer number (21478710).

Almost surely, 2^85133687 is an apocalyptic number.

85133687 is a deficient number, since it is larger than the sum of its proper divisors (781153).

85133687 is a wasteful number, since it uses less digits than its factorization.

85133687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781152.

The product of its digits is 120960, while the sum is 41.

The square root of 85133687 is about 9226.7918043055. The cubic root of 85133687 is about 439.9133558732.

The spelling of 85133687 in words is "eighty-five million, one hundred thirty-three thousand, six hundred eighty-seven".