86506600666 has 8 divisors (see below), whose sum is σ = 129761294580. Its totient is φ = 43252835808.

The previous prime is 86506600603. The next prime is 86506600681. The reversal of 86506600666 is 66600660568.

It can be written as a sum of positive squares in 2 ways, for example, as 84058825041 + 2447775625 = 289929^2 + 49475^2 .

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

It is a super-3 number, since 3×86506600666³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

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, 89880 + ... + 425548.

Almost surely, 2^86506600666 is an apocalyptic number.

86506600666 is a deficient number, since it is larger than the sum of its proper divisors (43254693914).

86506600666 is a wasteful number, since it uses less digits than its factorization.

86506600666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464528.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 86506600666 in words is "eighty-six billion, five hundred six million, six hundred thousand, six hundred sixty-six".