6660398233 has 4 divisors (see below), whose sum is σ = 6662476980. Its totient is φ = 6658319488.

The previous prime is 6660398221. The next prime is 6660398293. The reversal of 6660398233 is 3328930666.

6660398233 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3328930666 = 2 ⋅1664465333.

It can be written as a sum of positive squares in 2 ways, for example, as 4524849289 + 2135548944 = 67267^2 + 46212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6660398233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660398293) 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, 1034560 + ... + 1040977.

It is an arithmetic number, because the mean of its divisors is an integer number (1665619245).

Almost surely, 2^6660398233 is an apocalyptic number.

It is an amenable number.

6660398233 is a deficient number, since it is larger than the sum of its proper divisors (2078747).

6660398233 is a wasteful number, since it uses less digits than its factorization.

6660398233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078746.

The product of its (nonzero) digits is 839808, while the sum is 46.

The square root of 6660398233 is about 81611.2629053123. The cubic root of 6660398233 is about 1881.4819905911.

It can be divided in two parts, 66603 and 98233, that added together give a square (164836 = 406²).

The spelling of 6660398233 in words is "six billion, six hundred sixty million, three hundred ninety-eight thousand, two hundred thirty-three".