620024539 has 2 divisors, whose sum is σ = 620024540. Its totient is φ = 620024538.

The previous prime is 620024507. The next prime is 620024543. The reversal of 620024539 is 935420026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620024539 - 2⁵ = 620024507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620024539.

It is not a weakly prime, because it can be changed into another prime (620022539) 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, 310012269 + 310012270.

It is an arithmetic number, because the mean of its divisors is an integer number (310012270).

Almost surely, 2^620024539 is an apocalyptic number.

620024539 is a deficient number, since it is larger than the sum of its proper divisors (1).

620024539 is an equidigital number, since it uses as much as digits as its factorization.

620024539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 620024539 is about 24900.2919460797. The cubic root of 620024539 is about 852.7131478851.

The spelling of 620024539 in words is "six hundred twenty million, twenty-four thousand, five hundred thirty-nine".