85201687 has 4 divisors (see below), whose sum is σ = 86809320. Its totient is φ = 83594056.

The previous prime is 85201679. The next prime is 85201693. The reversal of 85201687 is 78610258.

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 85201687 - 2³ = 85201679 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 (85201607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803737 + ... + 803842.

It is an arithmetic number, because the mean of its divisors is an integer number (21702330).

Almost surely, 2^85201687 is an apocalyptic number.

85201687 is a deficient number, since it is larger than the sum of its proper divisors (1607633).

85201687 is a wasteful number, since it uses less digits than its factorization.

85201687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607632.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 85201687 is about 9230.4759898935. The cubic root of 85201687 is about 440.0304507163.

The spelling of 85201687 in words is "eighty-five million, two hundred one thousand, six hundred eighty-seven".