620445223 has 4 divisors (see below), whose sum is σ = 628299040. Its totient is φ = 612591408.

The previous prime is 620445211. The next prime is 620445233. The reversal of 620445223 is 322544026.

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 620445223 - 2¹⁷ = 620314151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620445191 and 620445200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620445233) 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, 3926790 + ... + 3926947.

It is an arithmetic number, because the mean of its divisors is an integer number (157074760).

Almost surely, 2^620445223 is an apocalyptic number.

620445223 is a deficient number, since it is larger than the sum of its proper divisors (7853817).

620445223 is an equidigital number, since it uses as much as digits as its factorization.

620445223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7853816.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 620445223 is about 24908.7378845256. The cubic root of 620445223 is about 852.9059583602.

Adding to 620445223 its reverse (322544026), we get a palindrome (942989249).

The spelling of 620445223 in words is "six hundred twenty million, four hundred forty-five thousand, two hundred twenty-three".