6663606313 has 32 divisors (see below), whose sum is σ = 8462361600. Its totient is φ = 5107055616.

The previous prime is 6663606311. The next prime is 6663606317. The reversal of 6663606313 is 3136063666.

It is a happy number.

It is not a de Polignac number, because 6663606313 - 2¹ = 6663606311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6663606311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372273 + ... + 389761.

It is an arithmetic number, because the mean of its divisors is an integer number (264448800).

Almost surely, 2^6663606313 is an apocalyptic number.

It is an amenable number.

6663606313 is a deficient number, since it is larger than the sum of its proper divisors (1798755287).

6663606313 is a wasteful number, since it uses less digits than its factorization.

6663606313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17641.

The product of its (nonzero) digits is 209952, while the sum is 40.

The square root of 6663606313 is about 81630.9151792383. The cubic root of 6663606313 is about 1881.7840233771.

Adding to 6663606313 its reverse (3136063666), we get a palindrome (9799669979).

The spelling of 6663606313 in words is "six billion, six hundred sixty-three million, six hundred six thousand, three hundred thirteen".