663362985 has 32 divisors (see below), whose sum is σ = 1089672192. Its totient is φ = 344401920.

The previous prime is 663362981. The next prime is 663362993. The reversal of 663362985 is 589263366.

663362985 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 663362985 - 2² = 663362981 is a prime.

It is a super-2 number, since 2×663362985² = 880100899736220450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (663362981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372417 + ... + 374193.

It is an arithmetic number, because the mean of its divisors is an integer number (34052256).

Almost surely, 2^663362985 is an apocalyptic number.

It is an amenable number.

663362985 is a deficient number, since it is larger than the sum of its proper divisors (426309207).

663362985 is a wasteful number, since it uses less digits than its factorization.

663362985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433.

The product of its digits is 1399680, while the sum is 48.

The square root of 663362985 is about 25755.8339993097. The cubic root of 663362985 is about 872.1350586368.

The spelling of 663362985 in words is "six hundred sixty-three million, three hundred sixty-two thousand, nine hundred eighty-five".