266390363 has 2 divisors, whose sum is σ = 266390364. Its totient is φ = 266390362.

The previous prime is 266390351. The next prime is 266390483. The reversal of 266390363 is 363093662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266390363 - 2⁸ = 266390107 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266320363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133195181 + 133195182.

It is an arithmetic number, because the mean of its divisors is an integer number (133195182).

Almost surely, 2^266390363 is an apocalyptic number.

266390363 is a deficient number, since it is larger than the sum of its proper divisors (1).

266390363 is an equidigital number, since it uses as much as digits as its factorization.

266390363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 38.

The square root of 266390363 is about 16321.4693885079. The cubic root of 266390363 is about 643.4372060317.

The spelling of 266390363 in words is "two hundred sixty-six million, three hundred ninety thousand, three hundred sixty-three".