5566657 has 2 divisors, whose sum is σ = 5566658. Its totient is φ = 5566656.

The previous prime is 5566619. The next prime is 5566661. The reversal of 5566657 is 7566655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5013121 + 553536 = 2239^2 + 744^2 .

It is a cyclic number.

It is not a de Polignac number, because 5566657 - 2¹¹ = 5564609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5566607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2783328 + 2783329.

It is an arithmetic number, because the mean of its divisors is an integer number (2783329).

Almost surely, 2^5566657 is an apocalyptic number.

It is an amenable number.

5566657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5566657 is an equidigital number, since it uses as much as digits as its factorization.

5566657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 40.

The square root of 5566657 is about 2359.3764006618. The cubic root of 5566657 is about 177.2276534897.

The spelling of 5566657 in words is "five million, five hundred sixty-six thousand, six hundred fifty-seven".