679824 has 30 divisors (see below), whose sum is σ = 1902966. Its totient is φ = 226560.

The previous prime is 679823. The next prime is 679829. The reversal of 679824 is 428976.

679824 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 589824 + 90000 = 768^2 + 300^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 6⁶ + 7⁵ + 8⁵ + 9⁵ + 2¹⁹ + 4⁴ .

It is not an unprimeable number, because it can be changed into a prime (679823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2217 + ... + 2504.

2⁶⁷⁹⁸²⁴ is an apocalyptic number.

It is an amenable number.

679824 is an abundant number, since it is smaller than the sum of its proper divisors (1223142).

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

679824 is a wasteful number, since it uses less digits than its factorization.

679824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735 (or 4726 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 679824 is about 824.5144025425. The cubic root of 679824 is about 87.9290061020.

The spelling of 679824 in words is "six hundred seventy-nine thousand, eight hundred twenty-four".