680406 has 16 divisors (see below), whose sum is σ = 1371648. Its totient is φ = 225000.

The previous prime is 680401. The next prime is 680411. The reversal of 680406 is 604086.

680406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (680401) and next prime (680411).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531 + ... + 1281.

It is an arithmetic number, because the mean of its divisors is an integer number (85728).

2⁶⁸⁰⁴⁰⁶ is an apocalyptic number.

680406 is an abundant number, since it is smaller than the sum of its proper divisors (691242).

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

680406 is a wasteful number, since it uses less digits than its factorization.

680406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 680406 is about 824.8672620489. The cubic root of 680406 is about 87.9540910676.

The spelling of 680406 in words is "six hundred eighty thousand, four hundred six".