6216656 has 10 divisors (see below), whose sum is σ = 12044802. Its totient is φ = 3108320.

The previous prime is 6216599. The next prime is 6216697. The reversal of 6216656 is 6566126.

It can be written as a sum of positive squares in only one way, i.e., 5216656 + 1000000 = 2284^2 + 1000^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194255 + ... + 194286.

Almost surely, 2^6216656 is an apocalyptic number.

It is an amenable number.

6216656 is a deficient number, since it is larger than the sum of its proper divisors (5828146).

6216656 is a wasteful number, since it uses less digits than its factorization.

6216656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388549 (or 388543 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 6216656 is about 2493.3222816154. The cubic root of 6216656 is about 183.8734164019.

The spelling of 6216656 in words is "six million, two hundred sixteen thousand, six hundred fifty-six".