2645909 has 8 divisors (see below), whose sum is σ = 3034368. Its totient is φ = 2260080.

The previous prime is 2645899. The next prime is 2645911. The reversal of 2645909 is 9095462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2645909 - 2⁴ = 2645893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2579 + ... + 3455.

It is an arithmetic number, because the mean of its divisors is an integer number (379296).

2^2645909 is an apocalyptic number.

It is an amenable number.

2645909 is a deficient number, since it is larger than the sum of its proper divisors (388459).

2645909 is an equidigital number, since it uses as much as digits as its factorization.

2645909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2645909 is about 1626.6250336202. The cubic root of 2645909 is about 138.3115031438.

The spelling of 2645909 in words is "two million, six hundred forty-five thousand, nine hundred nine".