679919240 has 128 divisors (see below), whose sum is σ = 2054142720. Its totient is φ = 195609600.

The previous prime is 679919209. The next prime is 679919243. The reversal of 679919240 is 42919976.

It is not an unprimeable number, because it can be changed into a prime (679919243) 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 31 ways as a sum of consecutive naturals, for example, 31550 + ... + 48530.

It is an arithmetic number, because the mean of its divisors is an integer number (16047990).

Almost surely, 2^679919240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679919240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1027071360).

679919240 is an abundant number, since it is smaller than the sum of its proper divisors (1374223480).

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

679919240 is a wasteful number, since it uses less digits than its factorization.

679919240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17023 (or 17019 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 679919240 is about 26075.2610725185. The cubic root of 679919240 is about 879.3311205079.

It can be divided in two parts, 679 and 919240, that added together give a palindrome (919919).

The spelling of 679919240 in words is "six hundred seventy-nine million, nine hundred nineteen thousand, two hundred forty".