2664909 has 12 divisors (see below), whose sum is σ = 4145596. Its totient is φ = 1639872.

The previous prime is 2664901. The next prime is 2664911. The reversal of 2664909 is 9094662.

2664909 is a `hidden beast` number, since 2 + 6 + 649 + 0 + 9 = 666.

2664909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1432809 + 1232100 = 1197^2 + 1110^2 .

It is not a de Polignac number, because 2664909 - 2³ = 2664901 is a prime.

2664909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11272 + ... + 11505.

2^2664909 is an apocalyptic number.

It is an amenable number.

2664909 is a deficient number, since it is larger than the sum of its proper divisors (1480687).

2664909 is a wasteful number, since it uses less digits than its factorization.

2664909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22796 (or 22793 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2664909 is about 1632.4548998364. The cubic root of 2664909 is about 138.6417807237.

The spelling of 2664909 in words is "two million, six hundred sixty-four thousand, nine hundred nine".