6620626 has 16 divisors (see below), whose sum is σ = 10634400. Its totient is φ = 3081888.

The previous prime is 6620617. The next prime is 6620629. The reversal of 6620626 is 6260266.

It is a junction number, because it is equal to n+sod(n) for n = 6620594 and 6620603.

It is not an unprimeable number, because it can be changed into a prime (6620629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766 + ... + 3718.

It is an arithmetic number, because the mean of its divisors is an integer number (664650).

Almost surely, 2^6620626 is an apocalyptic number.

6620626 is a deficient number, since it is larger than the sum of its proper divisors (4013774).

6620626 is a wasteful number, since it uses less digits than its factorization.

6620626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033.

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

The square root of 6620626 is about 2573.0577140826. The cubic root of 6620626 is about 187.7729452933.

The spelling of 6620626 in words is "six million, six hundred twenty thousand, six hundred twenty-six".