6664830993 has 6 divisors (see below), whose sum is σ = 9626978114. Its totient is φ = 4443220656.

The previous prime is 6664830961. The next prime is 6664831009. The reversal of 6664830993 is 3990384666.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6648282369 + 16548624 = 81537^2 + 4068^2 .

It is not a de Polignac number, because 6664830993 - 2⁵ = 6664830961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6664830923) 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, 370268380 + ... + 370268397.

Almost surely, 2^6664830993 is an apocalyptic number.

It is an amenable number.

6664830993 is a deficient number, since it is larger than the sum of its proper divisors (2962147121).

6664830993 is a wasteful number, since it uses less digits than its factorization.

6664830993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740536783 (or 740536780 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The square root of 6664830993 is about 81638.4161593058. The cubic root of 6664830993 is about 1881.8992983988.

The spelling of 6664830993 in words is "six billion, six hundred sixty-four million, eight hundred thirty thousand, nine hundred ninety-three".