679804 has 6 divisors (see below), whose sum is σ = 1189664. Its totient is φ = 339900.

The previous prime is 679793. The next prime is 679807. The reversal of 679804 is 408976.

It is a super-3 number, since 3×679804³ = 942480561483331392, which contains 333 as substring.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 679804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679807) 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 as a sum of consecutive naturals, namely, 84972 + ... + 84979.

2⁶⁷⁹⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

679804 is a deficient number, since it is larger than the sum of its proper divisors (509860).

679804 is a wasteful number, since it uses less digits than its factorization.

679804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169955 (or 169953 counting only the distinct ones).

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

The square root of 679804 is about 824.5022741024. The cubic root of 679804 is about 87.9281438213.

The spelling of 679804 in words is "six hundred seventy-nine thousand, eight hundred four".