500640317 has 4 divisors (see below), whose sum is σ = 501146496. Its totient is φ = 500134140.

The previous prime is 500640289. The next prime is 500640341. The reversal of 500640317 is 713046005.

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 500640317 - 2⁸ = 500640061 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 (500640347) 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, 251603 + ... + 253584.

It is an arithmetic number, because the mean of its divisors is an integer number (125286624).

Almost surely, 2^500640317 is an apocalyptic number.

It is an amenable number.

500640317 is a deficient number, since it is larger than the sum of its proper divisors (506179).

500640317 is an equidigital number, since it uses as much as digits as its factorization.

500640317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506178.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 500640317 is about 22374.9931173174. The cubic root of 500640317 is about 794.0391947481.

The spelling of 500640317 in words is "five hundred million, six hundred forty thousand, three hundred seventeen".