8666103213 has 6 divisors (see below), whose sum is σ = 12517704654. Its totient is φ = 5777402136.

The previous prime is 8666103181. The next prime is 8666103217. The reversal of 8666103213 is 3123016668.

It can be written as a sum of positive squares in only one way, i.e., 7217691849 + 1448411364 = 84957^2 + 38058^2 .

It is not a de Polignac number, because 8666103213 - 2⁵ = 8666103181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8666103217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 481450170 + ... + 481450187.

It is an arithmetic number, because the mean of its divisors is an integer number (2086284109).

Almost surely, 2^8666103213 is an apocalyptic number.

It is an amenable number.

8666103213 is a deficient number, since it is larger than the sum of its proper divisors (3851601441).

8666103213 is a wasteful number, since it uses less digits than its factorization.

8666103213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962900363 (or 962900360 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 8666103213 is about 93091.9073443014. The cubic root of 8666103213 is about 2054.0355337105.

The spelling of 8666103213 in words is "eight billion, six hundred sixty-six million, one hundred three thousand, two hundred thirteen".