426663287 has 2 divisors, whose sum is σ = 426663288. Its totient is φ = 426663286.

The previous prime is 426663277. The next prime is 426663301. The reversal of 426663287 is 782366624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426663287 - 2¹⁶ = 426597751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426663277) 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, 213331643 + 213331644.

It is an arithmetic number, because the mean of its divisors is an integer number (213331644).

Almost surely, 2^426663287 is an apocalyptic number.

426663287 is a deficient number, since it is larger than the sum of its proper divisors (1).

426663287 is an equidigital number, since it uses as much as digits as its factorization.

426663287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 44.

The square root of 426663287 is about 20655.8293709064. The cubic root of 426663287 is about 752.8268353570.

The spelling of 426663287 in words is "four hundred twenty-six million, six hundred sixty-three thousand, two hundred eighty-seven".