664014663 has 12 divisors (see below), whose sum is σ = 1032911880. Its totient is φ = 408624336.

The previous prime is 664014661. The next prime is 664014709. The reversal of 664014663 is 366410466.

664014663 is a `hidden beast` number, since 6 + 640 + 1 + 4 + 6 + 6 + 3 = 666.

664014663 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 664014663 - 2¹ = 664014661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664014661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2837553 + ... + 2837786.

It is an arithmetic number, because the mean of its divisors is an integer number (86075990).

Almost surely, 2^664014663 is an apocalyptic number.

664014663 is a deficient number, since it is larger than the sum of its proper divisors (368897217).

664014663 is a wasteful number, since it uses less digits than its factorization.

664014663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5675358 (or 5675355 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 664014663 is about 25768.4819692585. The cubic root of 664014663 is about 872.4205560351.

The spelling of 664014663 in words is "six hundred sixty-four million, fourteen thousand, six hundred sixty-three".