2666303 has 2 divisors, whose sum is σ = 2666304. Its totient is φ = 2666302.

The previous prime is 2666291. The next prime is 2666309. The reversal of 2666303 is 3036662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2666303 - 2¹² = 2662207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333151 + 1333152.

It is an arithmetic number, because the mean of its divisors is an integer number (1333152).

2^2666303 is an apocalyptic number.

2666303 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666303 is an equidigital number, since it uses as much as digits as its factorization.

2666303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 2666303 is about 1632.8818083376. The cubic root of 2666303 is about 138.6659507740.

The spelling of 2666303 in words is "two million, six hundred sixty-six thousand, three hundred three".