6631343665 has 8 divisors (see below), whose sum is σ = 7997601600. Its totient is φ = 5278415472.

The previous prime is 6631343617. The next prime is 6631343699. The reversal of 6631343665 is 5663431366.

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 6631343665 - 2¹¹ = 6631341617 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3331339 + ... + 3333328.

It is an arithmetic number, because the mean of its divisors is an integer number (999700200).

Almost surely, 2^6631343665 is an apocalyptic number.

It is an amenable number.

6631343665 is a deficient number, since it is larger than the sum of its proper divisors (1366257935).

6631343665 is a wasteful number, since it uses less digits than its factorization.

6631343665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6664871.

The product of its digits is 699840, while the sum is 43.

The square root of 6631343665 is about 81433.0624807885. The cubic root of 6631343665 is about 1878.7421479769.

The spelling of 6631343665 in words is "six billion, six hundred thirty-one million, three hundred forty-three thousand, six hundred sixty-five".