680824 has 8 divisors (see below), whose sum is σ = 1276560. Its totient is φ = 340408.

The previous prime is 680809. The next prime is 680831. The reversal of 680824 is 428086.

680824 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 680792 and 680801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42544 + ... + 42559.

It is an arithmetic number, because the mean of its divisors is an integer number (159570).

2⁶⁸⁰⁸²⁴ is an apocalyptic number.

It is an amenable number.

680824 is a deficient number, since it is larger than the sum of its proper divisors (595736).

680824 is a wasteful number, since it uses less digits than its factorization.

680824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85109 (or 85105 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 680824 is about 825.1205972462. The cubic root of 680824 is about 87.9720985925.

It can be divided in two parts, 68082 and 4, that added together give a palindrome (68086).

The spelling of 680824 in words is "six hundred eighty thousand, eight hundred twenty-four".