6649133965 has 8 divisors (see below), whose sum is σ = 7991854560. Its totient is φ = 5310711312.

The previous prime is 6649133947. The next prime is 6649133969. The reversal of 6649133965 is 5693319466.

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 6649133965 - 2⁷ = 6649133837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649133969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071079 + ... + 1077268.

It is an arithmetic number, because the mean of its divisors is an integer number (998981820).

Almost surely, 2^6649133965 is an apocalyptic number.

It is an amenable number.

6649133965 is a deficient number, since it is larger than the sum of its proper divisors (1342720595).

6649133965 is a wasteful number, since it uses less digits than its factorization.

6649133965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148971.

The product of its digits is 3149280, while the sum is 52.

The square root of 6649133965 is about 81542.2219773290. The cubic root of 6649133965 is about 1880.4207188981.

The spelling of 6649133965 in words is "six billion, six hundred forty-nine million, one hundred thirty-three thousand, nine hundred sixty-five".