6550604663 has 2 divisors, whose sum is σ = 6550604664. Its totient is φ = 6550604662.

The previous prime is 6550604659. The next prime is 6550604693. The reversal of 6550604663 is 3664060556.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6550604663 - 2² = 6550604659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6550604663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6550604693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275302331 + 3275302332.

It is an arithmetic number, because the mean of its divisors is an integer number (3275302332).

Almost surely, 2^6550604663 is an apocalyptic number.

6550604663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6550604663 is an equidigital number, since it uses as much as digits as its factorization.

6550604663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 41.

The square root of 6550604663 is about 80935.8058154733. The cubic root of 6550604663 is about 1871.0862042398.

The spelling of 6550604663 in words is "six billion, five hundred fifty million, six hundred four thousand, six hundred sixty-three".