426605563 has 2 divisors, whose sum is σ = 426605564. Its totient is φ = 426605562.

The previous prime is 426605521. The next prime is 426605591. The reversal of 426605563 is 365506624.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426605563 is a prime.

It is not a weakly prime, because it can be changed into another prime (426645563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213302781 + 213302782.

It is an arithmetic number, because the mean of its divisors is an integer number (213302782).

Almost surely, 2^426605563 is an apocalyptic number.

426605563 is a deficient number, since it is larger than the sum of its proper divisors (1).

426605563 is an equidigital number, since it uses as much as digits as its factorization.

426605563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 426605563 is about 20654.4320425423. The cubic root of 426605563 is about 752.7928834192.

The spelling of 426605563 in words is "four hundred twenty-six million, six hundred five thousand, five hundred sixty-three".