6505663336 has 8 divisors (see below), whose sum is σ = 12198118770. Its totient is φ = 3252831664.

The previous prime is 6505663303. The next prime is 6505663337. The reversal of 6505663336 is 6333665056.

It can be written as a sum of positive squares in only one way, i.e., 6038844100 + 466819236 = 77710^2 + 21606^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 6505663292 and 6505663301.

It is not an unprimeable number, because it can be changed into a prime (6505663337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406603951 + ... + 406603966.

Almost surely, 2^6505663336 is an apocalyptic number.

It is an amenable number.

6505663336 is a deficient number, since it is larger than the sum of its proper divisors (5692455434).

6505663336 is a wasteful number, since it uses less digits than its factorization.

6505663336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813207923 (or 813207919 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 43.

The square root of 6505663336 is about 80657.6923547903. The cubic root of 6505663336 is about 1866.7974329877.

The spelling of 6505663336 in words is "six billion, five hundred five million, six hundred sixty-three thousand, three hundred thirty-six".