85687713 has 20 divisors (see below), whose sum is σ = 128252740. Its totient is φ = 57013632.

The previous prime is 85687703. The next prime is 85687717. The reversal of 85687713 is 31778658.

85687713 is a `hidden beast` number, since 8 + 568 + 77 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5817744 + 79869969 = 2412^2 + 8937^2 .

It is not a de Polignac number, because 85687713 - 2¹⁴ = 85671329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85687717) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75333 + ... + 76461.

It is an arithmetic number, because the mean of its divisors is an integer number (6412637).

Almost surely, 2^85687713 is an apocalyptic number.

It is an amenable number.

85687713 is a deficient number, since it is larger than the sum of its proper divisors (42565027).

85687713 is a wasteful number, since it uses less digits than its factorization.

85687713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078 (or 2069 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 85687713 is about 9256.7657958922. The cubic root of 85687713 is about 440.8655705770.

The spelling of 85687713 in words is "eighty-five million, six hundred eighty-seven thousand, seven hundred thirteen".