85860685565 has 4 divisors (see below), whose sum is σ = 103032822684. Its totient is φ = 68688548448.

The previous prime is 85860685541. The next prime is 85860685577. The reversal of 85860685565 is 56558606858.

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 51049335481 + 34811350084 = 225941^2 + 186578^2 .

It is a cyclic number.

It is not a de Polignac number, because 85860685565 - 2³⁴ = 68680816381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85860685498 and 85860685507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8586068552 + ... + 8586068561.

It is an arithmetic number, because the mean of its divisors is an integer number (25758205671).

Almost surely, 2^85860685565 is an apocalyptic number.

It is an amenable number.

85860685565 is a deficient number, since it is larger than the sum of its proper divisors (17172137119).

85860685565 is a wasteful number, since it uses less digits than its factorization.

85860685565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17172137118.

The product of its (nonzero) digits is 69120000, while the sum is 62.

The spelling of 85860685565 in words is "eighty-five billion, eight hundred sixty million, six hundred eighty-five thousand, five hundred sixty-five".