680004 has 36 divisors (see below), whose sum is σ = 1852396. Its totient is φ = 209088.

The previous prime is 680003. The next prime is 680027. The reversal of 680004 is 400086.

It can be written as a sum of positive squares in 2 ways, for example, as 419904 + 260100 = 648^2 + 510^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (680003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259 + ... + 1194.

2⁶⁸⁰⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

680004 is an abundant number, since it is smaller than the sum of its proper divisors (1172392).

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

680004 is a wasteful number, since it uses less digits than its factorization.

680004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 680004 is about 824.6235504762. The cubic root of 680004 is about 87.9367658675.

The spelling of 680004 in words is "six hundred eighty thousand, four".