606240 has 72 divisors (see below), whose sum is σ = 2073708. Its totient is φ = 161280.

The previous prime is 606223. The next prime is 606241. The reversal of 606240 is 42606.

It can be written as a sum of positive squares in 2 ways, for example, as 501264 + 104976 = 708^2 + 324^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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 (606241) 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, 1230 + ... + 1650.

2⁶⁰⁶²⁴⁰ is an apocalyptic number.

606240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 606240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036854).

606240 is an abundant number, since it is smaller than the sum of its proper divisors (1467468).

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

606240 is a wasteful number, since it uses less digits than its factorization.

606240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 606240 is about 778.6141534804. The cubic root of 606240 is about 84.6346487183.

Adding to 606240 its reverse (42606), we get a palindrome (648846).

The spelling of 606240 in words is "six hundred six thousand, two hundred forty".