8353338661 has 4 divisors (see below), whose sum is σ = 8353527372. Its totient is φ = 8353149952.

The previous prime is 8353338641. The next prime is 8353338689. The reversal of 8353338661 is 1668333538.

It is a happy number.

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 5650378561 + 2702960100 = 75169^2 + 51990^2 .

It is a cyclic number.

It is not a de Polignac number, because 8353338661 - 2⁵ = 8353338629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8353338601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12015 + ... + 129811.

It is an arithmetic number, because the mean of its divisors is an integer number (2088381843).

Almost surely, 2^8353338661 is an apocalyptic number.

It is an amenable number.

8353338661 is a deficient number, since it is larger than the sum of its proper divisors (188711).

8353338661 is a wasteful number, since it uses less digits than its factorization.

8353338661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188710.

The product of its digits is 933120, while the sum is 46.

The square root of 8353338661 is about 91396.6009269491. The cubic root of 8353338661 is about 2029.0217212767.

The spelling of 8353338661 in words is "eight billion, three hundred fifty-three million, three hundred thirty-eight thousand, six hundred sixty-one".