266228843 has 2 divisors, whose sum is σ = 266228844. Its totient is φ = 266228842.

The previous prime is 266228803. The next prime is 266228849. The reversal of 266228843 is 348822662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266228843 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266228843.

It is not a weakly prime, because it can be changed into another prime (266228849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133114421 + 133114422.

It is an arithmetic number, because the mean of its divisors is an integer number (133114422).

Almost surely, 2^266228843 is an apocalyptic number.

266228843 is a deficient number, since it is larger than the sum of its proper divisors (1).

266228843 is an equidigital number, since it uses as much as digits as its factorization.

266228843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 41.

The square root of 266228843 is about 16316.5205543339. The cubic root of 266228843 is about 643.3071350233.

The spelling of 266228843 in words is "two hundred sixty-six million, two hundred twenty-eight thousand, eight hundred forty-three".