2666323 has 4 divisors (see below), whose sum is σ = 2908728. Its totient is φ = 2423920.

The previous prime is 2666309. The next prime is 2666381. The reversal of 2666323 is 3236662.

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

It is a cyclic number.

It is not a de Polignac number, because 2666323 - 2⁵ = 2666291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2666291 and 2666300.

It is not an unprimeable number, because it can be changed into a prime (2666303) 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, 121186 + ... + 121207.

It is an arithmetic number, because the mean of its divisors is an integer number (727182).

2^2666323 is an apocalyptic number.

2666323 is a deficient number, since it is larger than the sum of its proper divisors (242405).

2666323 is a wasteful number, since it uses less digits than its factorization.

2666323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242404.

The product of its digits is 7776, while the sum is 28.

The square root of 2666323 is about 1632.8879324681. The cubic root of 2666323 is about 138.6662974853. Note that the first 3 decimals are identical.

The spelling of 2666323 in words is "two million, six hundred sixty-six thousand, three hundred twenty-three".