678403059 has 8 divisors (see below), whose sum is σ = 904850832. Its totient is φ = 452112000.

The previous prime is 678403057. The next prime is 678403069. The reversal of 678403059 is 950304876.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 678403059 - 2¹ = 678403057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678403059.

It is not an unprimeable number, because it can be changed into a prime (678403057) 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 7 ways as a sum of consecutive naturals, for example, 28674 + ... + 46679.

It is an arithmetic number, because the mean of its divisors is an integer number (113106354).

Almost surely, 2^678403059 is an apocalyptic number.

678403059 is a deficient number, since it is larger than the sum of its proper divisors (226447773).

678403059 is a wasteful number, since it uses less digits than its factorization.

678403059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78357.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 678403059 is about 26046.1716764672. The cubic root of 678403059 is about 878.6770146994.

The spelling of 678403059 in words is "six hundred seventy-eight million, four hundred three thousand, fifty-nine".