620853239 has 2 divisors, whose sum is σ = 620853240. Its totient is φ = 620853238.

The previous prime is 620853217. The next prime is 620853251. The reversal of 620853239 is 932358026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620853239 - 2⁸ = 620852983 is a prime.

It is a super-2 number, since 2×620853239² = 770917488753582242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620853839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310426619 + 310426620.

It is an arithmetic number, because the mean of its divisors is an integer number (310426620).

Almost surely, 2^620853239 is an apocalyptic number.

620853239 is a deficient number, since it is larger than the sum of its proper divisors (1).

620853239 is an equidigital number, since it uses as much as digits as its factorization.

620853239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 620853239 is about 24916.9267567250. The cubic root of 620853239 is about 853.0928795199.

The spelling of 620853239 in words is "six hundred twenty million, eight hundred fifty-three thousand, two hundred thirty-nine".