2587609 has 2 divisors, whose sum is σ = 2587610. Its totient is φ = 2587608.

The previous prime is 2587589. The next prime is 2587639. The reversal of 2587609 is 9067852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2449225 + 138384 = 1565^2 + 372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2587609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2587639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1293804 + 1293805.

It is an arithmetic number, because the mean of its divisors is an integer number (1293805).

2^2587609 is an apocalyptic number.

It is an amenable number.

2587609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2587609 is an equidigital number, since it uses as much as digits as its factorization.

2587609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2587609 is about 1608.6046748658. The cubic root of 2587609 is about 137.2880967410.

The spelling of 2587609 in words is "two million, five hundred eighty-seven thousand, six hundred nine".