660224305 has 16 divisors (see below), whose sum is σ = 853804224. Its totient is φ = 487212480.

The previous prime is 660224239. The next prime is 660224317. The reversal of 660224305 is 503422066.

It is a happy number.

660224305 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 660224305 - 2¹¹ = 660222257 is a prime.

It is a super-2 number, since 2×660224305² = 871792265825466050, which contains 22 as substring.

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, 129250 + ... + 134260.

It is an arithmetic number, because the mean of its divisors is an integer number (53362764).

Almost surely, 2^660224305 is an apocalyptic number.

660224305 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

660224305 is a deficient number, since it is larger than the sum of its proper divisors (193579919).

660224305 is a wasteful number, since it uses less digits than its factorization.

660224305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7056.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 660224305 is about 25694.8303166221. The cubic root of 660224305 is about 870.7573908323.

The spelling of 660224305 in words is "six hundred sixty million, two hundred twenty-four thousand, three hundred five".