620400624385 has 16 divisors (see below), whose sum is σ = 747520486272. Its totient is φ = 494294400000.

The previous prime is 620400624383. The next prime is 620400624397. The reversal of 620400624385 is 583426004026.

It is not a de Polignac number, because 620400624385 - 2¹ = 620400624383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620400624383) 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 in 15 ways as a sum of consecutive naturals, for example, 18056092 + ... + 18090418.

It is an arithmetic number, because the mean of its divisors is an integer number (46720030392).

Almost surely, 2^620400624385 is an apocalyptic number.

It is an amenable number.

620400624385 is a deficient number, since it is larger than the sum of its proper divisors (127119861887).

620400624385 is a wasteful number, since it uses less digits than its factorization.

620400624385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48984.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 620400624385 in words is "six hundred twenty billion, four hundred million, six hundred twenty-four thousand, three hundred eighty-five".