678463 has 2 divisors, whose sum is σ = 678464. Its totient is φ = 678462.

The previous prime is 678451. The next prime is 678479. The reversal of 678463 is 364876.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678463 is a prime.

678463 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339231 + 339232.

It is an arithmetic number, because the mean of its divisors is an integer number (339232).

2⁶⁷⁸⁴⁶³ is an apocalyptic number.

678463 is a deficient number, since it is larger than the sum of its proper divisors (1).

678463 is an equidigital number, since it uses as much as digits as its factorization.

678463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 678463 is about 823.6886547719. The cubic root of 678463 is about 87.8702892741.

The spelling of 678463 in words is "six hundred seventy-eight thousand, four hundred sixty-three".