509720683 has 2 divisors, whose sum is σ = 509720684. Its totient is φ = 509720682.

The previous prime is 509720677. The next prime is 509720713. The reversal of 509720683 is 386027905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 509720683 - 2⁹ = 509720171 is a prime.

It is not a weakly prime, because it can be changed into another prime (509720633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254860341 + 254860342.

It is an arithmetic number, because the mean of its divisors is an integer number (254860342).

Almost surely, 2^509720683 is an apocalyptic number.

509720683 is a deficient number, since it is larger than the sum of its proper divisors (1).

509720683 is an equidigital number, since it uses as much as digits as its factorization.

509720683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 509720683 is about 22576.9945519770. The cubic root of 509720683 is about 798.8110897199.

The spelling of 509720683 in words is "five hundred nine million, seven hundred twenty thousand, six hundred eighty-three".