663342605 has 16 divisors (see below), whose sum is σ = 820618560. Its totient is φ = 514516608.

The previous prime is 663342593. The next prime is 663342643. The reversal of 663342605 is 506243366.

663342605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 663342605 - 2²⁰ = 662294029 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6134 + ... + 36936.

It is an arithmetic number, because the mean of its divisors is an integer number (51288660).

Almost surely, 2^663342605 is an apocalyptic number.

It is an amenable number.

663342605 is a deficient number, since it is larger than the sum of its proper divisors (157275955).

663342605 is a wasteful number, since it uses less digits than its factorization.

663342605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30940.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 663342605 is about 25755.4383577527. The cubic root of 663342605 is about 872.1261272298.

The spelling of 663342605 in words is "six hundred sixty-three million, three hundred forty-two thousand, six hundred five".