2668447 has 4 divisors (see below), whose sum is σ = 2676240. Its totient is φ = 2660656.

The previous prime is 2668433. The next prime is 2668453. The reversal of 2668447 is 7448662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2668447 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6³ + 6⁶ + 8⁷ + 4³ + 4³ + 7 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668427) 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, 3358 + ... + 4075.

It is an arithmetic number, because the mean of its divisors is an integer number (669060).

2^2668447 is an apocalyptic number.

2668447 is a deficient number, since it is larger than the sum of its proper divisors (7793).

2668447 is an equidigital number, since it uses as much as digits as its factorization.

2668447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792.

The product of its digits is 64512, while the sum is 37.

The square root of 2668447 is about 1633.5381844328. The cubic root of 2668447 is about 138.7031083597.

The spelling of 2668447 in words is "two million, six hundred sixty-eight thousand, four hundred forty-seven".