678563287 has 2 divisors, whose sum is σ = 678563288. Its totient is φ = 678563286.

The previous prime is 678563261. The next prime is 678563351. The reversal of 678563287 is 782365876.

678563287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678563287 - 2²³ = 670174679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678563087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339281643 + 339281644.

It is an arithmetic number, because the mean of its divisors is an integer number (339281644).

Almost surely, 2^678563287 is an apocalyptic number.

678563287 is a deficient number, since it is larger than the sum of its proper divisors (1).

678563287 is an equidigital number, since it uses as much as digits as its factorization.

678563287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 52.

The square root of 678563287 is about 26049.2473403743. The cubic root of 678563287 is about 878.7461857604.

The spelling of 678563287 in words is "six hundred seventy-eight million, five hundred sixty-three thousand, two hundred eighty-seven".