678449463 has 16 divisors (see below), whose sum is σ = 916792800. Its totient is φ = 446238720.

The previous prime is 678449441. The next prime is 678449489. The reversal of 678449463 is 364944876.

It is not a de Polignac number, because 678449463 - 2¹⁰ = 678448439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678449063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74503 + ... + 83111.

It is an arithmetic number, because the mean of its divisors is an integer number (57299550).

Almost surely, 2^678449463 is an apocalyptic number.

678449463 is a deficient number, since it is larger than the sum of its proper divisors (238343337).

678449463 is a wasteful number, since it uses less digits than its factorization.

678449463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8962.

The product of its digits is 3483648, while the sum is 51.

The square root of 678449463 is about 26047.0624639325. The cubic root of 678449463 is about 878.6970486100.

The spelling of 678449463 in words is "six hundred seventy-eight million, four hundred forty-nine thousand, four hundred sixty-three".