663500241 has 20 divisors (see below), whose sum is σ = 995042532. Its totient is φ = 440598528.

The previous prime is 663500231. The next prime is 663500267. The reversal of 663500241 is 142005366.

663500241 is a `hidden beast` number, since 6 + 635 + 0 + 0 + 24 + 1 = 666.

663500241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 449609616 + 213890625 = 21204^2 + 14625^2 .

It is not a de Polignac number, because 663500241 - 2¹¹ = 663498193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (663500231) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4881 + ... + 36753.

Almost surely, 2^663500241 is an apocalyptic number.

It is an amenable number.

663500241 is a deficient number, since it is larger than the sum of its proper divisors (331542291).

663500241 is a wasteful number, since it uses less digits than its factorization.

663500241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32142 (or 32133 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 663500241 is about 25758.4984228507. The cubic root of 663500241 is about 872.1952054530.

The spelling of 663500241 in words is "six hundred sixty-three million, five hundred thousand, two hundred forty-one".