6660611233 has 4 divisors (see below), whose sum is σ = 6660929968. Its totient is φ = 6660292500.

The previous prime is 6660611213. The next prime is 6660611249. The reversal of 6660611233 is 3321160666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3321160666 = 2 ⋅1660580333.

It is a cyclic number.

It is not a de Polignac number, because 6660611233 - 2⁵ = 6660611201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660611213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125643 + ... + 170608.

It is an arithmetic number, because the mean of its divisors is an integer number (1665232492).

Almost surely, 2^6660611233 is an apocalyptic number.

It is an amenable number.

6660611233 is a deficient number, since it is larger than the sum of its proper divisors (318735).

6660611233 is a wasteful number, since it uses less digits than its factorization.

6660611233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318734.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 6660611233 is about 81612.5678618189. The cubic root of 6660611233 is about 1881.5020470190.

Adding to 6660611233 its reverse (3321160666), we get a palindrome (9981771899).

The spelling of 6660611233 in words is "six billion, six hundred sixty million, six hundred eleven thousand, two hundred thirty-three".