620043665173 has 4 divisors (see below), whose sum is σ = 620052604128. Its totient is φ = 620034726220.

The previous prime is 620043665167. The next prime is 620043665191. The reversal of 620043665173 is 371566340026.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 620043665173 - 2³³ = 611453730581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620043665113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4364611 + ... + 4504432.

It is an arithmetic number, because the mean of its divisors is an integer number (155013151032).

Almost surely, 2^620043665173 is an apocalyptic number.

It is an amenable number.

620043665173 is a deficient number, since it is larger than the sum of its proper divisors (8938955).

620043665173 is an equidigital number, since it uses as much as digits as its factorization.

620043665173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8938954.

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 620043665173 in words is "six hundred twenty billion, forty-three million, six hundred sixty-five thousand, one hundred seventy-three".