620221245403 has 4 divisors (see below), whose sum is σ = 620559980848. Its totient is φ = 619882509960.

The previous prime is 620221245377. The next prime is 620221245433. The reversal of 620221245403 is 304542122026.

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

It is a cyclic number.

It is not a de Polignac number, because 620221245403 - 2²¹ = 620219148251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620221245433) 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 in 3 ways as a sum of consecutive naturals, for example, 169364976 + ... + 169368637.

It is an arithmetic number, because the mean of its divisors is an integer number (155139995212).

Almost surely, 2^620221245403 is an apocalyptic number.

620221245403 is a deficient number, since it is larger than the sum of its proper divisors (338735445).

620221245403 is a wasteful number, since it uses less digits than its factorization.

620221245403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338735444.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 620221245403 its reverse (304542122026), we get a palindrome (924763367429).

The spelling of 620221245403 in words is "six hundred twenty billion, two hundred twenty-one million, two hundred forty-five thousand, four hundred three".