2668869 has 28 divisors (see below), whose sum is σ = 4581856. Its totient is φ = 1522152.

The previous prime is 2668849. The next prime is 2668877. The reversal of 2668869 is 9688662.

It is not a de Polignac number, because 2668869 - 2⁵ = 2668837 is a prime.

It is a super-2 number, since 2×2668869² = 14245723478322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 6³ + 8³ + 8⁷ + 6⁶ + 9 .

It is a Duffinian number.

2668869 is a lucky number.

It is a congruent number.

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 27 ways as a sum of consecutive naturals, for example, 4842 + ... + 5364.

2^2668869 is an apocalyptic number.

It is an amenable number.

2668869 is a deficient number, since it is larger than the sum of its proper divisors (1912987).

2668869 is an frugal number, since it uses more digits than its factorization.

2668869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 533 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 2668869 is about 1633.6673467998. The cubic root of 2668869 is about 138.7104196818.

The spelling of 2668869 in words is "two million, six hundred sixty-eight thousand, eight hundred sixty-nine".