2668809 has 16 divisors (see below), whose sum is σ = 4181184. Its totient is φ = 1492800.

The previous prime is 2668793. The next prime is 2668829. The reversal of 2668809 is 9088662.

It is not a de Polignac number, because 2668809 - 2⁴ = 2668793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2668829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2682 + ... + 3539.

It is an arithmetic number, because the mean of its divisors is an integer number (261324).

2^2668809 is an apocalyptic number.

It is an amenable number.

2668809 is a deficient number, since it is larger than the sum of its proper divisors (1512375).

2668809 is a wasteful number, since it uses less digits than its factorization.

2668809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 2668809 is about 1633.6489831050. The cubic root of 2668809 is about 138.7093802043.

The spelling of 2668809 in words is "two million, six hundred sixty-eight thousand, eight hundred nine".