6649040530 has 32 divisors (see below), whose sum is σ = 13221584640. Its totient is φ = 2387224320.

The previous prime is 6649040513. The next prime is 6649040543. The reversal of 6649040530 is 350409466.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6649040530.

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 15 ways as a sum of consecutive naturals, for example, 373879 + ... + 391258.

It is an arithmetic number, because the mean of its divisors is an integer number (413174520).

Almost surely, 2^6649040530 is an apocalyptic number.

6649040530 is a deficient number, since it is larger than the sum of its proper divisors (6572544110).

6649040530 is a wasteful number, since it uses less digits than its factorization.

6649040530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765234.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 6649040530 is about 81541.6490512670. The cubic root of 6649040530 is about 1880.4119108371.

Adding to 6649040530 its reverse (350409466), we get a palindrome (6999449996).

The spelling of 6649040530 in words is "six billion, six hundred forty-nine million, forty thousand, five hundred thirty".