6606637 has 2 divisors, whose sum is σ = 6606638. Its totient is φ = 6606636.

The previous prime is 6606631. The next prime is 6606641. The reversal of 6606637 is 7366066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3316041 + 3290596 = 1821^2 + 1814^2 .

It is a cyclic number.

It is not a de Polignac number, because 6606637 - 2³ = 6606629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6606631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303318 + 3303319.

It is an arithmetic number, because the mean of its divisors is an integer number (3303319).

Almost surely, 2^6606637 is an apocalyptic number.

It is an amenable number.

6606637 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606637 is an equidigital number, since it uses as much as digits as its factorization.

6606637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 6606637 is about 2570.3379155278. The cubic root of 6606637 is about 187.6406009114.

It can be divided in two parts, 66066 and 37, that multiplied together give a palindrome (2444442).

The spelling of 6606637 in words is "six million, six hundred six thousand, six hundred thirty-seven".