6556916 has 6 divisors (see below), whose sum is σ = 11474610. Its totient is φ = 3278456.

The previous prime is 6556861. The next prime is 6556937. The reversal of 6556916 is 6196556.

It can be written as a sum of positive squares in only one way, i.e., 6250000 + 306916 = 2500^2 + 554^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6556916.

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, 819611 + ... + 819618.

It is an arithmetic number, because the mean of its divisors is an integer number (1912435).

Almost surely, 2^6556916 is an apocalyptic number.

It is an amenable number.

6556916 is a deficient number, since it is larger than the sum of its proper divisors (4917694).

6556916 is a wasteful number, since it uses less digits than its factorization.

6556916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639233 (or 1639231 counting only the distinct ones).

The product of its digits is 48600, while the sum is 38.

The square root of 6556916 is about 2560.6475743452. The cubic root of 6556916 is about 187.1686925631.

The spelling of 6556916 in words is "six million, five hundred fifty-six thousand, nine hundred sixteen".