2666266 has 4 divisors (see below), whose sum is σ = 3999402. Its totient is φ = 1333132.

The previous prime is 2666227. The next prime is 2666267. The reversal of 2666266 is 6626662.

It is a happy number.

2666266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 2205225 + 461041 = 1485^2 + 679^2 .

It is not an unprimeable number, because it can be changed into a prime (2666267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666565 + ... + 666568.

2^2666266 is an apocalyptic number.

2666266 is a deficient number, since it is larger than the sum of its proper divisors (1333136).

2666266 is a wasteful number, since it uses less digits than its factorization.

2666266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333135.

The product of its digits is 31104, while the sum is 34.

The square root of 2666266 is about 1632.8704786357. The cubic root of 2666266 is about 138.6653093535.

The spelling of 2666266 in words is "two million, six hundred sixty-six thousand, two hundred sixty-six".