605288668009 has 9 divisors (see below), whose sum is σ = 611420335639. Its totient is φ = 599217910600.

The previous prime is 605288667913. The next prime is 605288668013. The reversal of 605288668009 is 900866882506.

The square root of 605288668009 is 778003.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 581554184409 + 23734483600 = 762597^2 + 154060^2 .

It is not a de Polignac number, because 605288668009 - 2¹³ = 605288659817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605288662009) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 78574452 + ... + 78582154.

Almost surely, 2^605288668009 is an apocalyptic number.

605288668009 is the 778003-rd square number.

605288668009 is the 389002-nd centered octagonal number.

It is an amenable number.

605288668009 is a deficient number, since it is larger than the sum of its proper divisors (6131667630).

605288668009 is an frugal number, since it uses more digits than its factorization.

605288668009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15608 (or 7804 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 605288668009 in words is "six hundred five billion, two hundred eighty-eight million, six hundred sixty-eight thousand, nine".