9866661341 has 8 divisors (see below), whose sum is σ = 9888551160. Its totient is φ = 9844789248.

The previous prime is 9866661317. The next prime is 9866661359. The reversal of 9866661341 is 1431666689.

9866661341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5570383225 + 4296278116 = 74635^2 + 65546^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9866661341 - 2¹⁸ = 9866399197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9866661341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9866661241) 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 7 ways as a sum of consecutive naturals, for example, 2241755 + ... + 2246151.

It is an arithmetic number, because the mean of its divisors is an integer number (1236068895).

Almost surely, 2^9866661341 is an apocalyptic number.

It is an amenable number.

9866661341 is a deficient number, since it is larger than the sum of its proper divisors (21889819).

9866661341 is a wasteful number, since it uses less digits than its factorization.

9866661341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8863.

The product of its digits is 1119744, while the sum is 50.

The square root of 9866661341 is about 99331.0693640212. The cubic root of 9866661341 is about 2144.8161640454.

The spelling of 9866661341 in words is "nine billion, eight hundred sixty-six million, six hundred sixty-one thousand, three hundred forty-one".