86806876609 has 4 divisors (see below), whose sum is σ = 86840049604. Its totient is φ = 86773703616.

The previous prime is 86806876577. The next prime is 86806876661. The reversal of 86806876609 is 90667860868.

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 84537307009 + 2269569600 = 290753^2 + 47640^2 .

It is a cyclic number.

It is not a de Polignac number, because 86806876609 - 2⁵ = 86806876577 is a prime.

It is a super-3 number, since 3×86806876609³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86806873609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16582572 + ... + 16587805.

It is an arithmetic number, because the mean of its divisors is an integer number (21710012401).

Almost surely, 2^86806876609 is an apocalyptic number.

It is an amenable number.

86806876609 is a deficient number, since it is larger than the sum of its proper divisors (33172995).

86806876609 is a wasteful number, since it uses less digits than its factorization.

86806876609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33172994.

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 86806876609 in words is "eighty-six billion, eight hundred six million, eight hundred seventy-six thousand, six hundred nine".