660243713 has 4 divisors (see below), whose sum is σ = 660576000. Its totient is φ = 659911428.

The previous prime is 660243709. The next prime is 660243757. The reversal of 660243713 is 317342066.

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 660243713 - 2² = 660243709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 660243713.

It is not an unprimeable number, because it can be changed into a prime (660243613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163145 + ... + 167142.

It is an arithmetic number, because the mean of its divisors is an integer number (165144000).

Almost surely, 2^660243713 is an apocalyptic number.

It is an amenable number.

660243713 is a deficient number, since it is larger than the sum of its proper divisors (332287).

660243713 is a wasteful number, since it uses less digits than its factorization.

660243713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332286.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 660243713 is about 25695.2079773642. The cubic root of 660243713 is about 870.7659230305.

Adding to 660243713 its reverse (317342066), we get a palindrome (977585779).

The spelling of 660243713 in words is "six hundred sixty million, two hundred forty-three thousand, seven hundred thirteen".