86751685 has 4 divisors (see below), whose sum is σ = 104102028. Its totient is φ = 69401344.

The previous prime is 86751661. The next prime is 86751689. The reversal of 86751685 is 58615768.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30935844 + 55815841 = 5562^2 + 7471^2 .

It is a cyclic number.

It is not a de Polignac number, because 86751685 - 2²⁵ = 53197253 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 (86751689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8675164 + ... + 8675173.

It is an arithmetic number, because the mean of its divisors is an integer number (26025507).

Almost surely, 2^86751685 is an apocalyptic number.

It is an amenable number.

86751685 is a deficient number, since it is larger than the sum of its proper divisors (17350343).

86751685 is a wasteful number, since it uses less digits than its factorization.

86751685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17350342.

The product of its digits is 403200, while the sum is 46.

The square root of 86751685 is about 9314.0584601988. The cubic root of 86751685 is about 442.6827912602.

The spelling of 86751685 in words is "eighty-six million, seven hundred fifty-one thousand, six hundred eighty-five".