606820 has 12 divisors (see below), whose sum is σ = 1274364. Its totient is φ = 242720.

The previous prime is 606811. The next prime is 606829. The reversal of 606820 is 28606.

It is an interprime number because it is at equal distance from previous prime (606811) and next prime (606829).

It can be written as a sum of positive squares in 2 ways, for example, as 155236 + 451584 = 394^2 + 672^2 .

It is a junction number, because it is equal to n+sod(n) for n = 606791 and 606800.

It is not an unprimeable number, because it can be changed into a prime (606829) by changing a digit.

606820 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 (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15151 + ... + 15190.

It is an arithmetic number, because the mean of its divisors is an integer number (106197).

2⁶⁰⁶⁸²⁰ is an apocalyptic number.

It is an amenable number.

606820 is an abundant number, since it is smaller than the sum of its proper divisors (667544).

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

606820 is a wasteful number, since it uses less digits than its factorization.

606820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30350 (or 30348 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 606820 is about 778.9865210644. The cubic root of 606820 is about 84.6616305793.

The spelling of 606820 in words is "six hundred six thousand, eight hundred twenty".