2668441 has 4 divisors (see below), whose sum is σ = 2686500. Its totient is φ = 2650384.

The previous prime is 2668433. The next prime is 2668453. The reversal of 2668441 is 1448662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1448662 = 2 ⋅724331.

It can be written as a sum of positive squares in 2 ways, for example, as 697225 + 1971216 = 835^2 + 1404^2 .

It is a cyclic number.

It is not a de Polignac number, because 2668441 - 2³ = 2668433 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁹ + 6³ + 6⁶ + 8⁷ + 4³ + 4³ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2668411) 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, 8806 + ... + 9103.

It is an arithmetic number, because the mean of its divisors is an integer number (671625).

2^2668441 is an apocalyptic number.

It is an amenable number.

2668441 is a deficient number, since it is larger than the sum of its proper divisors (18059).

2668441 is a wasteful number, since it uses less digits than its factorization.

2668441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18058.

The product of its digits is 9216, while the sum is 31.

The square root of 2668441 is about 1633.5363479274. The cubic root of 2668441 is about 138.7030044017.

The spelling of 2668441 in words is "two million, six hundred sixty-eight thousand, four hundred forty-one".