620368013 has 2 divisors, whose sum is σ = 620368014. Its totient is φ = 620368012.

The previous prime is 620367991. The next prime is 620368033. The reversal of 620368013 is 310863026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332624644 + 287743369 = 18238^2 + 16963^2 .

It is a cyclic number.

It is not a de Polignac number, because 620368013 - 2¹⁴ = 620351629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620368033) 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 as a sum of consecutive naturals, namely, 310184006 + 310184007.

It is an arithmetic number, because the mean of its divisors is an integer number (310184007).

Almost surely, 2^620368013 is an apocalyptic number.

It is an amenable number.

620368013 is a deficient number, since it is larger than the sum of its proper divisors (1).

620368013 is an equidigital number, since it uses as much as digits as its factorization.

620368013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 620368013 is about 24907.1879785736. The cubic root of 620368013 is about 852.8705775302.

The spelling of 620368013 in words is "six hundred twenty million, three hundred sixty-eight thousand, thirteen".