520220683 has 4 divisors (see below), whose sum is σ = 520288560. Its totient is φ = 520152808.

The previous prime is 520220663. The next prime is 520220713. The reversal of 520220683 is 386022025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520220683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520220633) 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 3 ways as a sum of consecutive naturals, for example, 20728 + ... + 38341.

It is an arithmetic number, because the mean of its divisors is an integer number (130072140).

Almost surely, 2^520220683 is an apocalyptic number.

520220683 is a deficient number, since it is larger than the sum of its proper divisors (67877).

520220683 is an equidigital number, since it uses as much as digits as its factorization.

520220683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67876.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 520220683 is about 22808.3467835790. The cubic root of 520220683 is about 804.2588927859.

The spelling of 520220683 in words is "five hundred twenty million, two hundred twenty thousand, six hundred eighty-three".