679413978 has 24 divisors (see below), whose sum is σ = 1472630016. Its totient is φ = 226384200.

The previous prime is 679413961. The next prime is 679414007. The reversal of 679413978 is 879314976.

It is a happy number.

679413978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55473 + ... + 66603.

It is an arithmetic number, because the mean of its divisors is an integer number (61359584).

Almost surely, 2^679413978 is an apocalyptic number.

679413978 is an abundant number, since it is smaller than the sum of its proper divisors (793216038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679413978 is a wasteful number, since it uses less digits than its factorization.

679413978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14530 (or 14527 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 679413978 is about 26065.5707399627. The cubic root of 679413978 is about 879.1132501716.

The spelling of 679413978 in words is "six hundred seventy-nine million, four hundred thirteen thousand, nine hundred seventy-eight".