663061264 has 20 divisors (see below), whose sum is σ = 1297157056. Its totient is φ = 328311072.

The previous prime is 663061237. The next prime is 663061283. The reversal of 663061264 is 462160366.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199524 + ... + 202819.

Almost surely, 2^663061264 is an apocalyptic number.

It is an amenable number.

663061264 is a deficient number, since it is larger than the sum of its proper divisors (634095792).

663061264 is a wasteful number, since it uses less digits than its factorization.

663061264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402454 (or 402448 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 663061264 is about 25749.9759999888. The cubic root of 663061264 is about 872.0028126049.

The spelling of 663061264 in words is "six hundred sixty-three million, sixty-one thousand, two hundred sixty-four".