2606669009 has 4 divisors (see below), whose sum is σ = 2979050304. Its totient is φ = 2234287716.

The previous prime is 2606669003. The next prime is 2606669081. The reversal of 2606669009 is 9009666062.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2606669009 - 2⁴ = 2606668993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2606669003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186190637 + ... + 186190650.

It is an arithmetic number, because the mean of its divisors is an integer number (744762576).

Almost surely, 2^2606669009 is an apocalyptic number.

It is an amenable number.

2606669009 is a deficient number, since it is larger than the sum of its proper divisors (372381295).

2606669009 is an equidigital number, since it uses as much as digits as its factorization.

2606669009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372381294.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 2606669009 is about 51055.5482685281. The cubic root of 2606669009 is about 1376.2435487597.

The spelling of 2606669009 in words is "two billion, six hundred six million, six hundred sixty-nine thousand, nine".