5645657 has 2 divisors, whose sum is σ = 5645658. Its totient is φ = 5645656.

The previous prime is 5645639. The next prime is 5645671. The reversal of 5645657 is 7565465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5494336 + 151321 = 2344^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645657 - 2¹⁶ = 5580121 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5645657.

It is not a weakly prime, because it can be changed into another prime (5645677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822828 + 2822829.

It is an arithmetic number, because the mean of its divisors is an integer number (2822829).

Almost surely, 2^5645657 is an apocalyptic number.

It is an amenable number.

5645657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645657 is an equidigital number, since it uses as much as digits as its factorization.

5645657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 38.

The square root of 5645657 is about 2376.0591322608. The cubic root of 5645657 is about 178.0621022208.

The spelling of 5645657 in words is "five million, six hundred forty-five thousand, six hundred fifty-seven".