606606 has 64 divisors (see below), whose sum is σ = 1645056. Its totient is φ = 144000.

The previous prime is 606589. The next prime is 606607.

606606 = T₁₉₄ + T₁₉₅ + ... + T₂₂₁.

606606 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (606607) by changing a digit.

606606 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5956 + ... + 6056.

It is an arithmetic number, because the mean of its divisors is an integer number (25704).

2⁶⁰⁶⁶⁰⁶ is an apocalyptic number.

606606 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 606606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822528).

606606 is an abundant number, since it is smaller than the sum of its proper divisors (1038450).

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

606606 is a wasteful number, since it uses less digits than its factorization.

606606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 606606 is about 778.8491509914. The cubic root of 606606 is about 84.6516772053.

It can be divided in two parts, 60 and 6606, that added together give a palindrome (6666).

The spelling of 606606 in words is "six hundred six thousand, six hundred six".