1678463 has 2 divisors, whose sum is σ = 1678464. Its totient is φ = 1678462.

The previous prime is 1678459. The next prime is 1678507. The reversal of 1678463 is 3648761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1678463 - 2² = 1678459 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1678423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839231 + 839232.

It is an arithmetic number, because the mean of its divisors is an integer number (839232).

2^1678463 is an apocalyptic number.

1678463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1678463 is an equidigital number, since it uses as much as digits as its factorization.

1678463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 1678463 is about 1295.5550933866. Note that the first 3 decimals coincide. The cubic root of 1678463 is about 118.8421747873.

The spelling of 1678463 in words is "one million, six hundred seventy-eight thousand, four hundred sixty-three".