6620266 has 4 divisors (see below), whose sum is σ = 9930402. Its totient is φ = 3310132.

The previous prime is 6620261. The next prime is 6620281.

6620266 is nontrivially palindromic in base 10.

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., 4601025 + 2019241 = 2145^2 + 1421^2 .

It is not an unprimeable number, because it can be changed into a prime (6620261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655065 + ... + 1655068.

Almost surely, 2^6620266 is an apocalyptic number.

6620266 is a deficient number, since it is larger than the sum of its proper divisors (3310136).

6620266 is a wasteful number, since it uses less digits than its factorization.

6620266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310135.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 6620266 is about 2572.9877574524. The cubic root of 6620266 is about 187.7695418143.

It can be divided in two parts, 6620 and 266, that added together give a palindrome (6886).

The spelling of 6620266 in words is "six million, six hundred twenty thousand, two hundred sixty-six".