679408 has 10 divisors (see below), whose sum is σ = 1316384. Its totient is φ = 339696.

The previous prime is 679403. The next prime is 679409. The reversal of 679408 is 804976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679403) by changing a digit.

679408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21216 + ... + 21247.

2⁶⁷⁹⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

679408 is a deficient number, since it is larger than the sum of its proper divisors (636976).

679408 is a wasteful number, since it uses less digits than its factorization.

679408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42471 (or 42465 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 679408 is about 824.2620942394. The cubic root of 679408 is about 87.9110671795.

The spelling of 679408 in words is "six hundred seventy-nine thousand, four hundred eight".