2666343 has 4 divisors (see below), whose sum is σ = 3555128. Its totient is φ = 1777560.

The previous prime is 2666309. The next prime is 2666381. The reversal of 2666343 is 3436662.

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

It is not a de Polignac number, because 2666343 - 2⁸ = 2666087 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2666343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444388 + ... + 444393.

It is an arithmetic number, because the mean of its divisors is an integer number (888782).

2^2666343 is an apocalyptic number.

2666343 is a deficient number, since it is larger than the sum of its proper divisors (888785).

2666343 is an equidigital number, since it uses as much as digits as its factorization.

2666343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888784.

The product of its digits is 15552, while the sum is 30.

The square root of 2666343 is about 1632.8940565756. The cubic root of 2666343 is about 138.6666441948. Note that the first 4 decimals are identical.

The spelling of 2666343 in words is "two million, six hundred sixty-six thousand, three hundred forty-three".