905563663 has 2 divisors, whose sum is σ = 905563664. Its totient is φ = 905563662.

The previous prime is 905563651. The next prime is 905563699. The reversal of 905563663 is 366365509.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 905563663 - 2²⁵ = 872009231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (905561663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452781831 + 452781832.

It is an arithmetic number, because the mean of its divisors is an integer number (452781832).

Almost surely, 2^905563663 is an apocalyptic number.

905563663 is a deficient number, since it is larger than the sum of its proper divisors (1).

905563663 is an equidigital number, since it uses as much as digits as its factorization.

905563663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 437400, while the sum is 43.

The square root of 905563663 is about 30092.5848507568. The cubic root of 905563663 is about 967.4748018284.

The spelling of 905563663 in words is "nine hundred five million, five hundred sixty-three thousand, six hundred sixty-three".