6606121 has 2 divisors, whose sum is σ = 6606122. Its totient is φ = 6606120.

The previous prime is 6606109. The next prime is 6606139. The reversal of 6606121 is 1216066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 26896 = 2565^2 + 164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6606121 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6606092 and 6606101.

It is not a weakly prime, because it can be changed into another prime (6606101) 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, 3303060 + 3303061.

It is an arithmetic number, because the mean of its divisors is an integer number (3303061).

Almost surely, 2^6606121 is an apocalyptic number.

It is an amenable number.

6606121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606121 is an equidigital number, since it uses as much as digits as its factorization.

6606121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 6606121 is about 2570.2375376607. The cubic root of 6606121 is about 187.6357156689.

The spelling of 6606121 in words is "six million, six hundred six thousand, one hundred twenty-one".