426698563 has 2 divisors, whose sum is σ = 426698564. Its totient is φ = 426698562.

The previous prime is 426698557. The next prime is 426698567. The reversal of 426698563 is 365896624.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426698563 is a prime.

It is not a weakly prime, because it can be changed into another prime (426698567) 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, 213349281 + 213349282.

It is an arithmetic number, because the mean of its divisors is an integer number (213349282).

Almost surely, 2^426698563 is an apocalyptic number.

426698563 is a deficient number, since it is larger than the sum of its proper divisors (1).

426698563 is an equidigital number, since it uses as much as digits as its factorization.

426698563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 49.

The square root of 426698563 is about 20656.6832526425. The cubic root of 426698563 is about 752.8475823867.

The spelling of 426698563 in words is "four hundred twenty-six million, six hundred ninety-eight thousand, five hundred sixty-three".