660713 has 4 divisors (see below), whose sum is σ = 662340. Its totient is φ = 659088.

The previous prime is 660683. The next prime is 660719. The reversal of 660713 is 317066.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 310249 = 592^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 660713 - 2¹⁰ = 659689 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 660713.

It is not an unprimeable number, because it can be changed into a prime (660719) 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, 383 + ... + 1211.

It is an arithmetic number, because the mean of its divisors is an integer number (165585).

2⁶⁶⁰⁷¹³ is an apocalyptic number.

It is an amenable number.

660713 is a deficient number, since it is larger than the sum of its proper divisors (1627).

660713 is an equidigital number, since it uses as much as digits as its factorization.

660713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 660713 is about 812.8425431780. The cubic root of 660713 is about 87.0972181387.

Adding to 660713 its reverse (317066), we get a palindrome (977779).

The spelling of 660713 in words is "six hundred sixty thousand, seven hundred thirteen".