660243013 has 16 divisors (see below), whose sum is σ = 678053376. Its totient is φ = 642769920.

The previous prime is 660243011. The next prime is 660243041. The reversal of 660243013 is 310342066.

It is a cyclic number.

It is not a de Polignac number, because 660243013 - 2¹ = 660243011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660243011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2833545 + ... + 2833777.

It is an arithmetic number, because the mean of its divisors is an integer number (42378336).

Almost surely, 2^660243013 is an apocalyptic number.

It is an amenable number.

660243013 is a deficient number, since it is larger than the sum of its proper divisors (17810363).

660243013 is a wasteful number, since it uses less digits than its factorization.

660243013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 660243013 is about 25695.1943561437. The cubic root of 660243013 is about 870.7656152974.

Adding to 660243013 its reverse (310342066), we get a palindrome (970585079).

The spelling of 660243013 in words is "six hundred sixty million, two hundred forty-three thousand, thirteen".