6620222 has 16 divisors (see below), whose sum is σ = 11461632. Its totient is φ = 2809080.

The previous prime is 6620209. The next prime is 6620231. The reversal of 6620222 is 2220266.

It is a junction number, because it is equal to n+sod(n) for n = 6620194 and 6620203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854 + ... + 3737.

It is an arithmetic number, because the mean of its divisors is an integer number (716352).

Almost surely, 2^6620222 is an apocalyptic number.

6620222 is a deficient number, since it is larger than the sum of its proper divisors (4841410).

6620222 is a wasteful number, since it uses less digits than its factorization.

6620222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 6620222 is about 2572.9792070672. The cubic root of 6620222 is about 187.7691258250.

Adding to 6620222 its reverse (2220266), we get a palindrome (8840488).

The spelling of 6620222 in words is "six million, six hundred twenty thousand, two hundred twenty-two".