660302243 has 4 divisors (see below), whose sum is σ = 666473400. Its totient is φ = 654131088.

The previous prime is 660302233. The next prime is 660302257. The reversal of 660302243 is 342203066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660302243 - 2⁶ = 660302179 is a prime.

It is a super-2 number, since 2×660302243² = 871998104221662098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660302213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3085418 + ... + 3085631.

It is an arithmetic number, because the mean of its divisors is an integer number (166618350).

Almost surely, 2^660302243 is an apocalyptic number.

660302243 is a deficient number, since it is larger than the sum of its proper divisors (6171157).

660302243 is a wasteful number, since it uses less digits than its factorization.

660302243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171156.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 660302243 is about 25696.3468804420. The cubic root of 660302243 is about 870.7916531371.

The spelling of 660302243 in words is "six hundred sixty million, three hundred two thousand, two hundred forty-three".