6630866613 has 24 divisors (see below), whose sum is σ = 11299298816. Its totient is φ = 3666837600.

The previous prime is 6630866603. The next prime is 6630866621. The reversal of 6630866613 is 3166680366.

It is a happy number.

It is not a de Polignac number, because 6630866613 - 2⁹ = 6630866101 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 (6630866603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1695658 + ... + 1699563.

Almost surely, 2^6630866613 is an apocalyptic number.

6630866613 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6630866613 is a deficient number, since it is larger than the sum of its proper divisors (4668432203).

6630866613 is a wasteful number, since it uses less digits than its factorization.

6630866613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395265 (or 3395262 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 6630866613 is about 81430.1333229905. The cubic root of 6630866613 is about 1878.6970953080.

The spelling of 6630866613 in words is "six billion, six hundred thirty million, eight hundred sixty-six thousand, six hundred thirteen".