266220463 has 2 divisors, whose sum is σ = 266220464. Its totient is φ = 266220462.

The previous prime is 266220433. The next prime is 266220473. The reversal of 266220463 is 364022662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266220463 - 2⁹ = 266219951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266220433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133110231 + 133110232.

It is an arithmetic number, because the mean of its divisors is an integer number (133110232).

Almost surely, 2^266220463 is an apocalyptic number.

266220463 is a deficient number, since it is larger than the sum of its proper divisors (1).

266220463 is an equidigital number, since it uses as much as digits as its factorization.

266220463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 266220463 is about 16316.2637573680. The cubic root of 266220463 is about 643.3003852283.

The spelling of 266220463 in words is "two hundred sixty-six million, two hundred twenty thousand, four hundred sixty-three".