6681466815 has 8 divisors (see below), whose sum is σ = 10690346928. Its totient is φ = 3563448960.

The previous prime is 6681466801. The next prime is 6681466901. The reversal of 6681466815 is 5186641866.

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

It is not a de Polignac number, because 6681466815 - 2⁶ = 6681466751 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222715546 + ... + 222715575.

It is an arithmetic number, because the mean of its divisors is an integer number (1336293366).

Almost surely, 2^6681466815 is an apocalyptic number.

6681466815 is a deficient number, since it is larger than the sum of its proper divisors (4008880113).

6681466815 is a wasteful number, since it uses less digits than its factorization.

6681466815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445431129.

The product of its digits is 1658880, while the sum is 51.

The square root of 6681466815 is about 81740.2398760855. The cubic root of 6681466815 is about 1883.4637756694.

The spelling of 6681466815 in words is "six billion, six hundred eighty-one million, four hundred sixty-six thousand, eight hundred fifteen".