609085915 has 8 divisors (see below), whose sum is σ = 742885488. Its totient is φ = 479280480.

The previous prime is 609085913. The next prime is 609085937. The reversal of 609085915 is 519580906.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609085915 - 2¹ = 609085913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609085913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 998197 + ... + 998806.

It is an arithmetic number, because the mean of its divisors is an integer number (92860686).

Almost surely, 2^609085915 is an apocalyptic number.

609085915 is a deficient number, since it is larger than the sum of its proper divisors (133799573).

609085915 is a wasteful number, since it uses less digits than its factorization.

609085915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997069.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 609085915 is about 24679.6660228618. Note that the first 3 decimals coincide. The cubic root of 609085915 is about 847.6687748150.

The spelling of 609085915 in words is "six hundred nine million, eighty-five thousand, nine hundred fifteen".