6646314987 has 12 divisors (see below), whose sum is σ = 10338712384. Its totient is φ = 4090039920.

The previous prime is 6646314971. The next prime is 6646314989. The reversal of 6646314987 is 7894136466.

6646314987 is a `hidden beast` number, since 66 + 463 + 1 + 49 + 87 = 666.

It is not a de Polignac number, because 6646314987 - 2⁴ = 6646314971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6646314989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28402939 + ... + 28403172.

Almost surely, 2^6646314987 is an apocalyptic number.

6646314987 is a deficient number, since it is larger than the sum of its proper divisors (3692397397).

6646314987 is a wasteful number, since it uses less digits than its factorization.

6646314987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56806130 (or 56806127 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 6646314987 is about 81524.9347561836. The cubic root of 6646314987 is about 1880.1549392260.

The spelling of 6646314987 in words is "six billion, six hundred forty-six million, three hundred fourteen thousand, nine hundred eighty-seven".