663484618 has 16 divisors (see below), whose sum is σ = 1033637760. Its totient is φ = 319178176.

The previous prime is 663484609. The next prime is 663484621. The reversal of 663484618 is 816484366.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 54271 + ... + 65362.

It is an arithmetic number, because the mean of its divisors is an integer number (64602360).

Almost surely, 2^663484618 is an apocalyptic number.

663484618 is a deficient number, since it is larger than the sum of its proper divisors (370153142).

663484618 is a wasteful number, since it uses less digits than its factorization.

663484618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119741.

The product of its digits is 663552, while the sum is 46.

The square root of 663484618 is about 25758.1951619286. The cubic root of 663484618 is about 872.1883597319.

The spelling of 663484618 in words is "six hundred sixty-three million, four hundred eighty-four thousand, six hundred eighteen".