663484617 has 24 divisors (see below), whose sum is σ = 1025360960. Its totient is φ = 412166880.

The previous prime is 663484609. The next prime is 663484621. The reversal of 663484617 is 716484366.

It is a happy number.

663484617 is a `hidden beast` number, since 6 + 634 + 8 + 4 + 6 + 1 + 7 = 666.

It is not a de Polignac number, because 663484617 - 2³ = 663484609 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663484607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21373 + ... + 42234.

Almost surely, 2^663484617 is an apocalyptic number.

It is an amenable number.

663484617 is a deficient number, since it is larger than the sum of its proper divisors (361876343).

663484617 is a wasteful number, since it uses less digits than its factorization.

663484617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63693 (or 63690 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 663484617 is about 25758.1951425173. The cubic root of 663484617 is about 872.1883592938.

The spelling of 663484617 in words is "six hundred sixty-three million, four hundred eighty-four thousand, six hundred seventeen".