660063305 has 16 divisors (see below), whose sum is σ = 885161088. Its totient is φ = 468336000.

The previous prime is 660063263. The next prime is 660063337. The reversal of 660063305 is 503360066.

660063305 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 660063305 - 2⁸ = 660063049 is a prime.

It is a Duffinian 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, 144101 + ... + 148610.

It is an arithmetic number, because the mean of its divisors is an integer number (55322568).

Almost surely, 2^660063305 is an apocalyptic number.

It is an amenable number.

660063305 is a deficient number, since it is larger than the sum of its proper divisors (225097783).

660063305 is a wasteful number, since it uses less digits than its factorization.

660063305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292768.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 660063305 is about 25691.6971996791. The cubic root of 660063305 is about 870.6866051230.

The spelling of 660063305 in words is "six hundred sixty million, sixty-three thousand, three hundred five".