520960613 has 4 divisors (see below), whose sum is σ = 521500320. Its totient is φ = 520420908.

The previous prime is 520960591. The next prime is 520960633. The reversal of 520960613 is 316069025.

It is a happy number.

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 520960613 - 2⁸ = 520960357 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 520960613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520960633) 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, 268403 + ... + 270336.

It is an arithmetic number, because the mean of its divisors is an integer number (130375080).

Almost surely, 2^520960613 is an apocalyptic number.

It is an amenable number.

520960613 is a deficient number, since it is larger than the sum of its proper divisors (539707).

520960613 is an equidigital number, since it uses as much as digits as its factorization.

520960613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539706.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 520960613 is about 22824.5616168197. The cubic root of 520960613 is about 804.6400216557.

The spelling of 520960613 in words is "five hundred twenty million, nine hundred sixty thousand, six hundred thirteen".