609841217 has 4 divisors (see below), whose sum is σ = 619838676. Its totient is φ = 599843760.

The previous prime is 609841181. The next prime is 609841247. The reversal of 609841217 is 712148906.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 345811216 + 264030001 = 18596^2 + 16249^2 .

It is a cyclic number.

It is not a de Polignac number, because 609841217 - 2⁸ = 609840961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609841247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4998638 + ... + 4998759.

It is an arithmetic number, because the mean of its divisors is an integer number (154959669).

Almost surely, 2^609841217 is an apocalyptic number.

It is an amenable number.

609841217 is a deficient number, since it is larger than the sum of its proper divisors (9997459).

609841217 is an equidigital number, since it uses as much as digits as its factorization.

609841217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9997458.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 609841217 is about 24694.9633933723. The cubic root of 609841217 is about 848.0190162944.

The spelling of 609841217 in words is "six hundred nine million, eight hundred forty-one thousand, two hundred seventeen".