663636006 has 48 divisors (see below), whose sum is σ = 1590720768. Its totient is φ = 198265200.

The previous prime is 663635993. The next prime is 663636011. The reversal of 663636006 is 600636366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9546 + ... + 37661.

It is an arithmetic number, because the mean of its divisors is an integer number (33140016).

Almost surely, 2^663636006 is an apocalyptic number.

663636006 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

663636006 is an abundant number, since it is smaller than the sum of its proper divisors (927084762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663636006 is a wasteful number, since it uses less digits than its factorization.

663636006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47297 (or 47294 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The square root of 663636006 is about 25761.1336318882. The cubic root of 663636006 is about 872.2546907398.

The spelling of 663636006 in words is "six hundred sixty-three million, six hundred thirty-six thousand, six".