620221200713 has 4 divisors (see below), whose sum is σ = 624748362900. Its totient is φ = 615694038528.

The previous prime is 620221200701. The next prime is 620221200727. The reversal of 620221200713 is 317002122026.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317002122026 = 2 ⋅158501061013.

It can be written as a sum of positive squares in 2 ways, for example, as 123347059264 + 496874141449 = 351208^2 + 704893^2 .

It is a cyclic number.

It is not a de Polignac number, because 620221200713 - 2¹⁴ = 620221184329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (620221200113) 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, 2263580888 + ... + 2263581161.

It is an arithmetic number, because the mean of its divisors is an integer number (156187090725).

Almost surely, 2^620221200713 is an apocalyptic number.

It is an amenable number.

620221200713 is a deficient number, since it is larger than the sum of its proper divisors (4527162187).

620221200713 is a wasteful number, since it uses less digits than its factorization.

620221200713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4527162186.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 620221200713 its reverse (317002122026), we get a palindrome (937223322739).

The spelling of 620221200713 in words is "six hundred twenty billion, two hundred twenty-one million, two hundred thousand, seven hundred thirteen".