6630680861 has 8 divisors (see below), whose sum is σ = 7822370304. Its totient is φ = 5500103760.

The previous prime is 6630680779. The next prime is 6630680869. The reversal of 6630680861 is 1680860366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6630680861 - 2²² = 6626486557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6630680869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15277850 + ... + 15278283.

It is an arithmetic number, because the mean of its divisors is an integer number (977796288).

Almost surely, 2^6630680861 is an apocalyptic number.

It is an amenable number.

6630680861 is a deficient number, since it is larger than the sum of its proper divisors (1191689443).

6630680861 is a wasteful number, since it uses less digits than its factorization.

6630680861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30556171.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 6630680861 is about 81428.9927544238. The cubic root of 6630680861 is about 1878.6795523521.

The spelling of 6630680861 in words is "six billion, six hundred thirty million, six hundred eighty thousand, eight hundred sixty-one".