2756609 has 2 divisors, whose sum is σ = 2756610. Its totient is φ = 2756608.

The previous prime is 2756603. The next prime is 2756627. The reversal of 2756609 is 9066572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1882384 + 874225 = 1372^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2756609 - 2¹² = 2752513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2756603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378304 + 1378305.

It is an arithmetic number, because the mean of its divisors is an integer number (1378305).

It is a Proth number, since it is equal to 673 ⋅ 2¹² + 1 and 673 < 2¹².

2^2756609 is an apocalyptic number.

It is an amenable number.

2756609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2756609 is an equidigital number, since it uses as much as digits as its factorization.

2756609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 2756609 is about 1660.3038878470. The cubic root of 2756609 is about 140.2141111544.

The spelling of 2756609 in words is "two million, seven hundred fifty-six thousand, six hundred nine".