606561 has 4 divisors (see below), whose sum is σ = 808752. Its totient is φ = 404372.

The previous prime is 606559. The next prime is 606569. The reversal of 606561 is 165606.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 606561 - 2¹ = 606559 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (606569) by changing a digit.

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, 101091 + ... + 101096.

It is an arithmetic number, because the mean of its divisors is an integer number (202188).

2⁶⁰⁶⁵⁶¹ is an apocalyptic number.

It is an amenable number.

606561 is a deficient number, since it is larger than the sum of its proper divisors (202191).

606561 is a wasteful number, since it uses less digits than its factorization.

606561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202190.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 606561 is about 778.8202616779. The cubic root of 606561 is about 84.6495839083.

The spelling of 606561 in words is "six hundred six thousand, five hundred sixty-one".