679509984 has 48 divisors (see below), whose sum is σ = 1785203280. Its totient is φ = 226314240.

The previous prime is 679509959. The next prime is 679509989. The reversal of 679509984 is 489905976.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679509989) 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 7 ways as a sum of consecutive naturals, for example, 158104 + ... + 162344.

It is an arithmetic number, because the mean of its divisors is an integer number (37191735).

Almost surely, 2^679509984 is an apocalyptic number.

It is an amenable number.

679509984 is an abundant number, since it is smaller than the sum of its proper divisors (1105693296).

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

679509984 is a wasteful number, since it uses less digits than its factorization.

679509984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923 (or 5915 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 679509984 is about 26067.4122996511. The cubic root of 679509984 is about 879.1546565278.

The spelling of 679509984 in words is "six hundred seventy-nine million, five hundred nine thousand, nine hundred eighty-four".