663536727 has 12 divisors (see below), whose sum is σ = 1095362320. Its totient is φ = 379163808.

The previous prime is 663536719. The next prime is 663536747. The reversal of 663536727 is 727635366.

663536727 is a `hidden beast` number, since 6 + 635 + 3 + 6 + 7 + 2 + 7 = 666.

663536727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663536727 - 2³ = 663536719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663536717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5266102 + ... + 5266227.

Almost surely, 2^663536727 is an apocalyptic number.

663536727 is a deficient number, since it is larger than the sum of its proper divisors (431825593).

663536727 is a wasteful number, since it uses less digits than its factorization.

663536727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10532342 (or 10532339 counting only the distinct ones).

The product of its digits is 952560, while the sum is 45.

The square root of 663536727 is about 25759.2066453919. The cubic root of 663536727 is about 872.2111925514.

The spelling of 663536727 in words is "six hundred sixty-three million, five hundred thirty-six thousand, seven hundred twenty-seven".