6620216 has 16 divisors (see below), whose sum is σ = 12509640. Its totient is φ = 3284320.

The previous prime is 6620209. The next prime is 6620231. The reversal of 6620216 is 6120266.

It is a junction number, because it is equal to n+sod(n) for n = 6620191 and 6620200.

It is a congruent number.

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, 2111 + ... + 4206.

Almost surely, 2^6620216 is an apocalyptic number.

It is an amenable number.

6620216 is a deficient number, since it is larger than the sum of its proper divisors (5889424).

6620216 is a wasteful number, since it uses less digits than its factorization.

6620216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6454 (or 6450 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 6620216 is about 2572.9780411033. The cubic root of 6620216 is about 187.7690690991.

The spelling of 6620216 in words is "six million, six hundred twenty thousand, two hundred sixteen".