2647009 has 2 divisors, whose sum is σ = 2647010. Its totient is φ = 2647008.

The previous prime is 2647003. The next prime is 2647013. The reversal of 2647009 is 9007462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 529984 = 1455^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 2647009 - 2⁷ = 2646881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2647003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323504 + 1323505.

It is an arithmetic number, because the mean of its divisors is an integer number (1323505).

2^2647009 is an apocalyptic number.

It is an amenable number.

2647009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647009 is an equidigital number, since it uses as much as digits as its factorization.

2647009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2647009 is about 1626.9631218931. The cubic root of 2647009 is about 138.3306675185.

The spelling of 2647009 in words is "two million, six hundred forty-seven thousand, nine".