85205687 has 8 divisors (see below), whose sum is σ = 98611200. Its totient is φ = 72108504.

The previous prime is 85205677. The next prime is 85205699. The reversal of 85205687 is 78650258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85205687 - 2⁶ = 85205623 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 (85205677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76487 + ... + 77592.

It is an arithmetic number, because the mean of its divisors is an integer number (12326400).

Almost surely, 2^85205687 is an apocalyptic number.

85205687 is a deficient number, since it is larger than the sum of its proper divisors (13405513).

85205687 is a wasteful number, since it uses less digits than its factorization.

85205687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154165.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 85205687 is about 9230.6926609004. The cubic root of 85205687 is about 440.0373367077.

The spelling of 85205687 in words is "eighty-five million, two hundred five thousand, six hundred eighty-seven".