660207241 has 4 divisors (see below), whose sum is σ = 660519184. Its totient is φ = 659895300.

The previous prime is 660207239. The next prime is 660207253. The reversal of 660207241 is 142702066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 660207241 - 2¹ = 660207239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660207281) 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, 152775 + ... + 157036.

It is an arithmetic number, because the mean of its divisors is an integer number (165129796).

Almost surely, 2^660207241 is an apocalyptic number.

It is an amenable number.

660207241 is a deficient number, since it is larger than the sum of its proper divisors (311943).

660207241 is a wasteful number, since it uses less digits than its factorization.

660207241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311942.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 660207241 is about 25694.4982632469. The cubic root of 660207241 is about 870.7498889717.

The spelling of 660207241 in words is "six hundred sixty million, two hundred seven thousand, two hundred forty-one".