6610609 has 2 divisors, whose sum is σ = 6610610. Its totient is φ = 6610608.

The previous prime is 6610607. The next prime is 6610619. The reversal of 6610609 is 9060166.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4928400 + 1682209 = 2220^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 6610609 - 2¹ = 6610607 is a prime.

Together with 6610607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6610601) 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, 3305304 + 3305305.

It is an arithmetic number, because the mean of its divisors is an integer number (3305305).

Almost surely, 2^6610609 is an apocalyptic number.

It is an amenable number.

6610609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6610609 is an equidigital number, since it uses as much as digits as its factorization.

6610609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 6610609 is about 2571.1104604820. The cubic root of 6610609 is about 187.6781974048.

The spelling of 6610609 in words is "six million, six hundred ten thousand, six hundred nine".