6620122 has 4 divisors (see below), whose sum is σ = 9930186. Its totient is φ = 3310060.

The previous prime is 6620101. The next prime is 6620171. The reversal of 6620122 is 2210266.

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

It can be written as a sum of positive squares in only one way, i.e., 5997601 + 622521 = 2449^2 + 789^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6620122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655029 + ... + 1655032.

Almost surely, 2^6620122 is an apocalyptic number.

6620122 is a deficient number, since it is larger than the sum of its proper divisors (3310064).

6620122 is a wasteful number, since it uses less digits than its factorization.

6620122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310063.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 6620122 is about 2572.9597742678. The cubic root of 6620122 is about 187.7681803881.

Adding to 6620122 its reverse (2210266), we get a palindrome (8830388).

The spelling of 6620122 in words is "six million, six hundred twenty thousand, one hundred twenty-two".