678594463 has 2 divisors, whose sum is σ = 678594464. Its totient is φ = 678594462.

The previous prime is 678594419. The next prime is 678594517. The reversal of 678594463 is 364495876.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678594463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678594463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678592463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339297231 + 339297232.

It is an arithmetic number, because the mean of its divisors is an integer number (339297232).

Almost surely, 2^678594463 is an apocalyptic number.

678594463 is a deficient number, since it is larger than the sum of its proper divisors (1).

678594463 is an equidigital number, since it uses as much as digits as its factorization.

678594463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 52.

The square root of 678594463 is about 26049.8457385068. The cubic root of 678594463 is about 878.7596432974.

The spelling of 678594463 in words is "six hundred seventy-eight million, five hundred ninety-four thousand, four hundred sixty-three".