2650009 has 2 divisors, whose sum is σ = 2650010. Its totient is φ = 2650008.

The previous prime is 2650007. The next prime is 2650013. The reversal of 2650009 is 9000562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2576025 + 73984 = 1605^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2650009 - 2¹ = 2650007 is a prime.

Together with 2650007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2650007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325004 + 1325005.

It is an arithmetic number, because the mean of its divisors is an integer number (1325005).

2^2650009 is an apocalyptic number.

It is an amenable number.

2650009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2650009 is an equidigital number, since it uses as much as digits as its factorization.

2650009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2650009 is about 1627.8848239356. The cubic root of 2650009 is about 138.3829070240.

The spelling of 2650009 in words is "two million, six hundred fifty thousand, nine".