663455564 has 6 divisors (see below), whose sum is σ = 1161047244. Its totient is φ = 331727780.

The previous prime is 663455561. The next prime is 663455579. The reversal of 663455564 is 465554366.

663455564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×663455564³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (663455561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82931942 + ... + 82931949.

It is an arithmetic number, because the mean of its divisors is an integer number (193507874).

Almost surely, 2^663455564 is an apocalyptic number.

It is an amenable number.

663455564 is a deficient number, since it is larger than the sum of its proper divisors (497591680).

663455564 is a wasteful number, since it uses less digits than its factorization.

663455564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165863895 (or 165863893 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 44.

The square root of 663455564 is about 25757.6311799047. The cubic root of 663455564 is about 872.1756284996.

The spelling of 663455564 in words is "six hundred sixty-three million, four hundred fifty-five thousand, five hundred sixty-four".