620222 has 4 divisors (see below), whose sum is σ = 930336. Its totient is φ = 310110.

The previous prime is 620201. The next prime is 620227. The reversal of 620222 is 222026.

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

It is a junction number, because it is equal to n+sod(n) for n = 620197 and 620206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620227) by changing a digit.

620222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155054 + ... + 155057.

It is an arithmetic number, because the mean of its divisors is an integer number (232584).

2⁶²⁰²²² is an apocalyptic number.

620222 is a deficient number, since it is larger than the sum of its proper divisors (310114).

620222 is a wasteful number, since it uses less digits than its factorization.

620222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310113.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 620222 is about 787.5417449253. The cubic root of 620222 is about 85.2803660281.

Adding to 620222 its reverse (222026), we get a palindrome (842248).

The spelling of 620222 in words is "six hundred twenty thousand, two hundred twenty-two".