663257133 has 32 divisors (see below), whose sum is σ = 1225067520. Its totient is φ = 344548080.

The previous prime is 663257083. The next prime is 663257137. The reversal of 663257133 is 331752366.

663257133 is a `hidden beast` number, since 6 + 632 + 5 + 7 + 13 + 3 = 666.

It is not a de Polignac number, because 663257133 - 2¹⁰ = 663256109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663257137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157435 + ... + 161592.

It is an arithmetic number, because the mean of its divisors is an integer number (38283360).

Almost surely, 2^663257133 is an apocalyptic number.

663257133 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

663257133 is a deficient number, since it is larger than the sum of its proper divisors (561810387).

663257133 is a wasteful number, since it uses less digits than its factorization.

663257133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319054 (or 319048 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 663257133 is about 25753.7790042549. The cubic root of 663257133 is about 872.0886676699.

The spelling of 663257133 in words is "six hundred sixty-three million, two hundred fifty-seven thousand, one hundred thirty-three".