620807211841 has 4 divisors (see below), whose sum is σ = 637585785172. Its totient is φ = 604028638512.

The previous prime is 620807211797. The next prime is 620807211887. The reversal of 620807211841 is 148112708026.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450514809616 + 170292402225 = 671204^2 + 412665^2 .

It is a cyclic number.

It is not a de Polignac number, because 620807211841 - 2²⁵ = 620773657409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620807211794 and 620807211803.

It is not an unprimeable number, because it can be changed into a prime (620807215841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8389286610 + ... + 8389286683.

It is an arithmetic number, because the mean of its divisors is an integer number (159396446293).

Almost surely, 2^620807211841 is an apocalyptic number.

It is an amenable number.

620807211841 is a deficient number, since it is larger than the sum of its proper divisors (16778573331).

620807211841 is a wasteful number, since it uses less digits than its factorization.

620807211841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16778573330.

The product of its (nonzero) digits is 43008, while the sum is 40.

Adding to 620807211841 its reverse (148112708026), we get a palindrome (768919919867).

The spelling of 620807211841 in words is "six hundred twenty billion, eight hundred seven million, two hundred eleven thousand, eight hundred forty-one".