605997009 has 6 divisors (see below), whose sum is σ = 875329026. Its totient is φ = 403998000.

The previous prime is 605996987. The next prime is 605997023. The reversal of 605997009 is 900799506.

605997009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 332259984 + 273737025 = 18228^2 + 16545^2 .

It is not a de Polignac number, because 605997009 - 2¹² = 605992913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (605997059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33666492 + ... + 33666509.

It is an arithmetic number, because the mean of its divisors is an integer number (145888171).

Almost surely, 2^605997009 is an apocalyptic number.

It is an amenable number.

605997009 is a deficient number, since it is larger than the sum of its proper divisors (269332017).

605997009 is a wasteful number, since it uses less digits than its factorization.

605997009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67333007 (or 67333004 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 605997009 is about 24617.0064995726. The cubic root of 605997009 is about 846.2333955245.

The spelling of 605997009 in words is "six hundred five million, nine hundred ninety-seven thousand, nine".