1210609 has 2 divisors, whose sum is σ = 1210610. Its totient is φ = 1210608.

The previous prime is 1210597. The next prime is 1210613. The reversal of 1210609 is 9060121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680625 + 529984 = 825^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210609 - 2¹¹ = 1208561 is a prime.

It is a Chen prime.

1210609 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1210639) 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, 605304 + 605305.

It is an arithmetic number, because the mean of its divisors is an integer number (605305).

2^1210609 is an apocalyptic number.

It is an amenable number.

1210609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210609 is an equidigital number, since it uses as much as digits as its factorization.

1210609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1210609 is about 1100.2767833595. The cubic root of 1210609 is about 106.5780981372.

The spelling of 1210609 in words is "one million, two hundred ten thousand, six hundred nine".