678412003 has 4 divisors (see below), whose sum is σ = 678514320. Its totient is φ = 678309688.

The previous prime is 678412001. The next prime is 678412019. The reversal of 678412003 is 300214876.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 678412003 - 2¹ = 678412001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678412001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40468 + ... + 54721.

It is an arithmetic number, because the mean of its divisors is an integer number (169628580).

Almost surely, 2^678412003 is an apocalyptic number.

678412003 is a deficient number, since it is larger than the sum of its proper divisors (102317).

678412003 is an equidigital number, since it uses as much as digits as its factorization.

678412003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102316.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 678412003 is about 26046.3433709993. The cubic root of 678412003 is about 878.6808761466.

Adding to 678412003 its reverse (300214876), we get a palindrome (978626879).

The spelling of 678412003 in words is "six hundred seventy-eight million, four hundred twelve thousand, three".