6620066 has 8 divisors (see below), whose sum is σ = 9959760. Its totient is φ = 3300148.

The previous prime is 6620059. The next prime is 6620083. The reversal of 6620066 is 6600266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4076 + ... + 5463.

It is an arithmetic number, because the mean of its divisors is an integer number (1244970).

Almost surely, 2^6620066 is an apocalyptic number.

6620066 is a deficient number, since it is larger than the sum of its proper divisors (3339694).

6620066 is a wasteful number, since it uses less digits than its factorization.

6620066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9888.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 6620066 is about 2572.9488918360. The cubic root of 6620066 is about 187.7676509393.

It can be divided in two parts, 66200 and 66, that added together give a palindrome (66266).

The spelling of 6620066 in words is "six million, six hundred twenty thousand, sixty-six".