8586665661 has 36 divisors (see below), whose sum is σ = 13314202272. Its totient is φ = 4821980544.

The previous prime is 8586665653. The next prime is 8586665669. The reversal of 8586665661 is 1665666858.

8586665661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8586665653) and next prime (8586665669).

It is not a de Polignac number, because 8586665661 - 2³ = 8586665653 is a prime.

Its product of digits (12441600) is a multiple of the sum of its prime divisors (360).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8586665669) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30998655 + ... + 30998931.

It is an arithmetic number, because the mean of its divisors is an integer number (369838952).

Almost surely, 2^8586665661 is an apocalyptic number.

It is an amenable number.

8586665661 is a deficient number, since it is larger than the sum of its proper divisors (4727536611).

8586665661 is an frugal number, since it uses more digits than its factorization.

8586665661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 360 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 57.

The square root of 8586665661 is about 92664.2631277020. The cubic root of 8586665661 is about 2047.7401757435.

The spelling of 8586665661 in words is "eight billion, five hundred eighty-six million, six hundred sixty-five thousand, six hundred sixty-one".