6738639633 has 12 divisors (see below), whose sum is σ = 10618462608. Its totient is φ = 4084023960.

The previous prime is 6738639631. The next prime is 6738639641. The reversal of 6738639633 is 3369368376.

It is a happy number.

It is not a de Polignac number, because 6738639633 - 2¹ = 6738639631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6738639633.

It is not an unprimeable number, because it can be changed into a prime (6738639631) 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 11 ways as a sum of consecutive naturals, for example, 34033435 + ... + 34033632.

It is an arithmetic number, because the mean of its divisors is an integer number (884871884).

Almost surely, 2^6738639633 is an apocalyptic number.

It is an amenable number.

6738639633 is a deficient number, since it is larger than the sum of its proper divisors (3879822975).

6738639633 is a wasteful number, since it uses less digits than its factorization.

6738639633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68067084 (or 68067081 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 54.

The square root of 6738639633 is about 82089.2175197206. The cubic root of 6738639633 is about 1888.8207450051.

The spelling of 6738639633 in words is "six billion, seven hundred thirty-eight million, six hundred thirty-nine thousand, six hundred thirty-three".